Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
318 results about "Long pulse" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
LED substrate processing
ActiveUS8404499B2Improve efficiencyFast response timeSemiconductor/solid-state device testing/measurementMuffle furnacesLong pulseLight-emitting diode
Embodiments of the present invention pertain to substrate processing equipment and methods incorporating light emitting diodes (LEDs) for thermally processing substrates. Such light sources offer a variety of advantages including higher efficiency and more rapid response times. Pulse widths are selectable down to under a millisecond but can be for long pulses up to and exceeding a second. LEDs are preferable to tungsten-halogen lamps even in circumstances that allow longer processing times, since LEDs produce light with greater than 50% efficiency and tungsten-halogen lamps operate with less than 5% efficiency.
Owner:APPLIED MATERIALS INC
Tachygastrial electrical stimulation
InactiveUS20050222637A1Transit delayIncrease satietyElectrotherapyArtificial respirationGastric DistentionMotor disorder
A process and device for treating obesity and syndromes related to motor disorders of the stomach of a patient is provided. The process includes artificially altering, by means of electrical pulses for preset periods of time, the natural gastric motility of the patient to prevent the emptying of or to slow down gastric transit through the stomach to increase the feeling of satiety and / or to accelerate intestinal transit to reduce absorption time within the intestinal tract. More specifically, the electrical stimulation induces tachygastria, which inhibits gastric motility, yields gastric distention, and delays gastric emptying. The tachygastrial electrical stimulation of the stomach, or other portions of the gastrointestinal tract, includes relatively long pulse widths, with lengths of up to 500 milliseconds.
Owner:MEDTRONIC TRANSNEURONIX
Laser-based material processing apparatus and methods
ActiveUS20110240617A1Efficient processingEliminate expensive processing stepGlass severing apparatusWelding/soldering/cutting articlesHeat-affected zoneErbium lasers
Various embodiments may be used for laser-based modification of target material of a workpiece while advantageously achieving improvements in processing throughput and / or quality. Embodiments of a method of processing may include focusing and directing laser pulses to a region of the workpiece at a pulse width sufficiently short so that material is efficiently removed by nonlinear optical absorption from the region and a quantity of heat affected zone and thermal stress on the material within the region, proximate to the region, or both is reduced relative to a quantity obtainable using a laser with longer pulses. In at least one embodiment, an ultrashort pulse laser system may include at least one of a fiber amplifier or fiber laser. Various embodiments are suitable for at least one of dicing, cutting, scribing, and forming features on or within a composite material.
Owner:IMRA AMERICA
Pulsed electromagnetic field method of treating soft tissue wounds
A pulsed electromagnetic field method of treating a soft tissue wound, wherein, in one embodiment, a patient in need of treatment for a soft tissue wound is administered a pulsed electromagnetic field (PEMF) having repetitive pulse bursts less than approximately 30 ms in duration, with a pulse burst repetition rate greater than approximately 5 Hz, the pulse bursts generated with a drive signal including pulses each having a first-polarity portion with a pulse width less than 1 ms and a second-polarity portion with a shorter pulse width, the electromagnetic field having a maximum amplitude less than approximately 4 mT and rising to its maximum amplitude during the first-polarity portion. According to another aspect of the invention, a soft tissue wound is treated by administering a pulsed electromagnetic field having substantially unipolar magnetic field pulses generated with a drive signal including a series of pulses each having a first-polarity portion with a pulse width less than 1 ms and a second-polarity portion with a longer pulse width, the electromagnetic field having a maximum amplitude less than 4 mT and rising to its maximum amplitude during the first-polarity portion.
Owner:EUROPEAN BIOINFORMATICS INSTITUTE
Memory device and methods of controlling resistance variation and resistance profile drift
In a variable resistance memory device such as a PCRAM memory device having an array variable resistance memory cells, a process is performed to detect when the on / off resistance of each variable resistance memory cell has drifted beyond predetermined tolerance levels. When resistance drift beyond the predetermined tolerance levels is detected, at least one reset pulse is applied to the cell to return the cell to its original resistance profile. The reset pulse may be applied in the form of a “hard” write signal, a “hard” erase signal, a “soft” write signal or a “soft” erase signal as appropriate, depending on the direction of the drift and the programmed state of the cell. The “hard” write and erase signals have voltage levels which may be slightly greater in magnitude than the voltage levels of normal write and erase signals, respectively, or may have slightly longer pulse widths than those of the normal write and erase signals, or both. Similarly, the “soft” write and erase signals have voltage levels which are less than that of normal write and erase signals, or may have pulse widths which are less than that of normal write and erase signals, or both.
Owner:APTINA IMAGING CORP +1
Long-pulse pulse power system for gas discharge laser
A long pulse power system for gas discharge lasers. The system includes a sustainer capacitor for accepting a charge from a high voltage pulse power source. A peaking capacitor with a capacitance value of less than half the sustainer capacitance provides the high voltage for the laser discharge.
Owner:CYMER INC
Spectrum shearing interferometer suitable for measuring shaped pulses
The invention relates to the field of shaped pulse measurement, in particular to a spectrum shearing interferometer suitable for measuring shaped pulses. A plane grating, a first concave face reflecting mirror, a double-slit baffle, a first reflecting mirror and a second reflecting mirror are used for forming a special 4f zero dispersion compressor, the distance between the plane grating, the first reflecting mirror and the second reflecting mirror and the first concave face reflecting mirror is equal to the focal length of the first concave face reflecting mirror in the 4f zero dispersion compressor, the mode that the 4f zero dispersion compressor is added with the double-slit baffle is used for acquiring two quasi monochromatic long pulses, the two quasi monochromatic long pulses and a pulse to be measured are made to be in sum frequency. According to the mode, a shearing amount omega and the band width delta omega of an auxiliary pulse segment participating in sum frequency can be prevented from varying along with the change of the characteristics of the pulses to be measured, the shearing amount omega can be changed conveniently to measure the same pulse, the corresponding phase difference of each frequency of the pulse can be solved independently, and therefore the shaped pulses with various characteristics can be measured accurately.
Owner:SUN YAT SEN UNIV
Device and method for the transmission and reception of high fidelity audio using a single wire
An audio device (200) includes a first and second ICs (210) and (250) and a substrate (205). The first IC includes a sigma-delta, A / D converter (218) operable to convert an analog signal (234) into a pulse density modulated signal (236). A pulse density width modulator encoder (222) is operable to encode the PDM signal into a PDWM signal (244). The PDWM has short and long pulse widths defining first and second bit levels. The leading edges of each pulse bounds each pulse period. The second IC (250) includes a means (254) to receive the PDWM signal, an edge detector (304) operable to detect the leading pulse edges of the PDWM signal, a time-averaging circuit (308) operable to calculate each pulse period from the leading pulse edges and to generate a sample pulse (120) at near the midpoint of each pulse period, and a latch (312) operable to sample and hold the PDWM signal at the sample pulse to decode a PDM signal (278). The substrate is operable to support the first and second ICs and to conduct the PDWM signal between the first and second ICs.
Owner:DIALOG SEMICONDUCTOR
Sequential electromachining and electropolishing of metals and the like using modulated electric fields
A surface of an electrolytically dissolvable material, e.g., an electrolytically dissolvable metal, is smoothed by a two-step electrochemical process wherein a the surface to be smoothed and a counterelectrode are contacted with an electrolyte and an electric current is passed between the substrate and counterelectrode, with the substrate as the anode. In a first step relatively large asperities on the substrate are reduced in height by maintaining a macroprofile regime by using a pulsed electric current with short pulses. In a second step, small asperities and the remainder of the large asperities are reduced or removed by maintaining a microprofile regime by using a pulsed current having longer pulses or a direct current.
Owner:FARADAY TECH INC
Compact relativity backward wave oscillator (RBWO) with adjustable low-frequency-range frequency
ActiveCN102208315AReduce radial sizeCan be smallTravelling-wave tubesTransit-tube collectorsWave structureElectrical conductor
The invention discloses a compact relativity backward wave oscillator (RBWO) with an adjustable low-frequency-range frequency, and the oscillator provided by the invention is used for solving the problems that the RBWO size in a low frequency range is great, and the output microwave frequency is hard to adjust. The compact RBWO is in rotational symmetry with respect to a central axis, and composed of a cathode base, a cathode, an anode outer barrel, a stop neck, a slow wave structure, an inner conductor, a collector, a microwave output port, a solenoid field, two rows of supporting rods, a mode converter, a radiation port and a sealing plate; the slow wave structure is composed of five slow wave blades, the inner surface of each slow wave blade is in a trapezoid structure; the left end face of the collector is provided with an annular groove; the left end of the mode converter is cylindrical, and the right end of the mode converter is in a tapered structure; the radiation port is cylindrical, the left end of the radiation port is in a tapered structure and the right end of the radiation port is cylindrical; the sealing plate is pressed on the radiation port; and the frequency of the output microwave is adjusted by virtue of adjusting the semi-diameter R3 of the inner conductor. The compact RBWO has the advantages of compact structure and convenient and adjustable work frequency, thereby being beneficial to outputting a long pulse of the microwave.
Owner:NAT UNIV OF DEFENSE TECH
Method of eliminating interference in a microphone
InactiveUS6895095B1Low processing expenditureEliminate distractionsTwo-way loud-speaking telephone systemsSpeech analysisMicrophone signalEngineering
A method of eliminating interference components in a microphone signal by generating a compensation signal and subtracting the compensation signal from the microphone signal. The compensation occurs completely in the frequency domain and the output signal is processed in the frequency domain as well. Measures for reducing the expenditure during the signal processing are specified. For example, advantageous modifications provide that a filter setting, obtained during a preceding speech pause, be used for eliminating interference in a voice signal and / or that the simulation filter be divided into several partial filters for long pulse responses. In particular, the invention is suitable for eliminating interference signal components, e.g., caused by a radio or the like, from a voice input signal in a motor vehicle, the source signal of which is available as reference signal.
Owner:NUANCE COMM INC
Device for electrically stimulating stomach
The present invention provides a gastric electrical stimulation apparatus having (1) a pulse generator located outside of the body, (2) an external coil connecting to the pulse generator, (3) an internal coil which is implanted in the body and receives electricity from the external coil by transcutaneous energy transmission, (4) a waveform rectifier circuit connecting to the internal coil, and (5) electrodes which are positioned in contact with the gastric wall and are connecting to the waveform rectifier circuit. This gastric electrical stimulation apparatus imposes a less burden on users and is capable of providing long pulse stimulation.
Owner:YOSHIMOCHI KUROKAWA
Bandwidth-limited and long pulse master oscillator power oscillator laser systems
InactiveUS20060007978A1Limited bandwidthAvoid short lengthOptical resonator shape and constructionActive medium materialMaster oscillatorLong pulse
Laser systems have a line-narrowed master oscillator and a power oscillator for amplifying the output of the master oscillator. The power oscillator includes optical arrangements for limiting the bandwidth of radiation that can be amplified. The limited amplification bandwidth of the power oscillator is relatively broad compared to that of the output of the master oscillator, but narrower than would be the case without the bandwidth limiting arrangements. The bandwidth narrowing arrangements of the power oscillator function primarily to restrict the bandwidth of amplified spontaneous emission generated by the power oscillator.
Owner:COHERENT GMBH
Delayed controlled stripe-free spectrum phase interference pulse measuring method and its measuring device
This invention refers to a method and device for measuring super short laser pulse, which adopts different optical structure with traditional Spectral Phase Interferometry for Direct Electric-field Reconstruction (SPIDER), sum-frequency of the copy pulse of a pulse to be measured with two quasi-monochrome long pulses with different frequency to generate two frequency spectrum sheared sum-frequency, leading defined small time delay between said two pulses through piezoelectric driven single reflection mirror or step reflection mirror, combined with measured single sum-frequency spectrum to calculate point-to-point spectrum phase difference of pulse to be measured, then reconstructing pulse spectrum phase without using Fourier transformation filter process.
Owner:SUN YAT SEN UNIV
Wave-band-cross mechanical frequency modulation relativity back wave oscillator
ActiveCN103456587AChange lengthEasy to adjustTravelling-wave tubesTransit-tube collectorsWave structureElectrical conductor
The invention relates to microwave source devices in the technical field of high-power microwaves and provides a wave-band-cross mechanical frequency modulation relativity back wave oscillator. The wave-band-cross mechanical frequency modulation relativity back wave oscillator comprises a cathode seat, a cathode, an anode outer cylinder, a cut-off neck, a slow wave structure, an inner conductor, a collector, a microwave output and a solenoidal magnetic field. The inner conductor is a cylinder, by adjusting the length of the inner conductor, the frequency of outputting microwaves can be adjusted, and outputting of wave-band-cross microwaves is achieved. An annular groove is formed in the collector, and a supporting rod is fixed on the anode outer cylinder. The wave-band-cross mechanical frequency modulation relativity back wave oscillator has the advantages that by adjusting the length of the inner conductor, frequency can jump between L wavebands and S wavebands, the adjusting manner is simple, the frequency in the wavebands can be adjusted, the bandwidth in the L-waveband frequency is adjusted by 7% or so, and the bandwidth in the S-waveband frequency is adjusted by 2% or so. The outer radius of a slow-wave vane can have a low value, and miniaturization is achieved. A groove structure is reserved at the left end of the collector, reflection of the tail end of the device can be increased, and achieving long-pulse outputting of the wavebands is facilitated.
Owner:NAT UNIV OF DEFENSE TECH
Inexpensive variable rep-rate source for high-energy, ultrafast lasers
InactiveUS20080130099A1High pulse energyReduce repetition rateLaser optical resonator constructionLaser using scattering effectsFiberCost effectiveness
System for converting relatively long pulses from rep-rate variable ultrafast optical sources to shorter, high-energy pulses suitable for sources in high-energy ultrafast lasers. Fibers with positive group velocity dispersion (GVD) and self phase modulation are advantageously employed with the optical sources. These systems take advantage of the need for higher pulse energies at lower repetition rates so that such sources can be cost effective.
Owner:IMRA AMERICA
Device for electrically stimulating stomach
Owner:YOSHIMOCHI KUROKAWA
Method and System for Detection of Long Pulse Bin 5 Radars in the Presence of Greenfield Packets
Aspects of a method and system for detection of long pulse bin 5 RADARs in the presence of Greenfield packets are presented. In one aspect of the system, a processor in a wireless communication device may receive a plurality of pulses via a received signal. The processor may select at least a portion of the received plurality of pulses. The processor may compute a time duration value and a pulse count value based on the selected at least a portion of the received plurality of pulses. The processor may determine whether the received signal comprises a RADAR transmission signal based on the computed time duration value and the computed pulse count value when the time duration value is greater than or equal to a threshold time duration value and the pulse count value is greater than or equal to a minimum pulse count threshold value.
Owner:AVAGO TECH WIRELESS IP SINGAPORE PTE
Inexpensive variable rep-rate source for high-energy, ultrafast lasers
InactiveUS7330301B2High pulse energyReduce repetition rateCladded optical fibreLaser optical resonator constructionFiberCost effectiveness
System for converting relatively long pulses from rep-rate variable ultrafast optical sources to shorter, high-energy pulses suitable for sources in high-energy ultrafast lasers. Fibers with positive group velocity dispersion (GVD) and self phase modulation are advantageously employed with the optical sources. These systems take advantage of the need for higher pulse energies at lower repetition rates so that such sources can be cost effective.
Owner:IMRA AMERICA
Skin treatement system with time modulated laser pulses
ActiveUS20110313408A1Precise mechanical tissue damageMinimize and prevent damageLaser detailsSurgical instrument detailsPulse durationLong pulse
A laser skin treatment process and system. The system includes features for producing a first laser beam of long pulse duration and a second laser beam of short pulse duration and a skin cooler for cooling the surface of a region of skin. The system is designed to utilize the first laser beam for heating a volume of skin tissue below the cooled surface region to a temperature to produce skin tissue modification but below skin tissue damage threshold. This volume of skin tissue is called a “thermal cavity”. The second laser beam is divided into a plurality of separate laser beams that are directed through separate optical fibers and via separate paths through skin tissue to a single tiny volume of skin tissue within the thermal cavity to produce in that tiny volume mechanical damage. This tiny volume is called an energy droplet. Thus tiny regions of tissue are damaged while minimizing or preventing any significant damage to adjacent tissue.
Owner:TANKOVICH NIKOLAI +1
Therapeutic field generator device and method
ActiveUS10478588B2Improve electrical strengthReducing the magnetic field generatedElectrotherapyMagnetotherapy using coils/electromagnetsEngineeringOperation mode
Owner:ZEEZ TECH
Laser system and method for treatment of biologic targets
InactiveUS7118562B2Less temperamentalEasy to operateDiagnosticsOptical resonator shape and constructionInfraredAlexandrite laser
A long pulse alexandrite laser for treating dermatological specimens is disclosed. The use of alexandrite allows operation in the near-infrared, specifically in a 50 nm range surrounding 755. Infrared in this range allows good penetration while still achieving an acceptable ratio of hemoglobin to melanin absorption In addition, a method and related system for treating biologic tissue with pulse light includes generating a long effective output light pulse comprising a series of sub-pulses having a fractional duty cycle over a selected effective pulse duration, a periodicity that is less than the thermal relaxation time of a targeted structure, and an interpulse-delay between successive sub-pulses that is greater than the thermal relaxation time of non-targeted structures within the treatment area; and delivering the output light to the tissue of a patient.
Owner:CYNOSURE
DC Thermostat with Latching Relay Repulsing
ActiveUS20150370270A1Increase widthReduce the amount requiredSampled-variable control systemsTemperature control using digital meansRoom temperatureEngineering
A thermostat, of the type that employs latching relays to connect thermostat power to the various wires of the thermostat run, has a re-pulse feature that supplies latching pulses at a given interval, e.g., three hours, to ensure that the relays are in their proper state agreeing with the thermostat mode and the room temperature relative to the setpoint(s). In the case that the room air temperature is changing in a manner contrary to the current heating or cooling mode, which may indicate the latching relay has been knocked or bumped and needs to have its proper state re-established, the thermostat microprocessor issues pulses to the latching relay(s) more frequently, e.g., each 30 minutes, and the re-pulses may have a longer pulse width, e.g., increased from 20 ms to 25 ms.
Owner:INT CONTROLS & MEASUREMENT
LED Substrate Processing
ActiveUS20100267174A1Improve efficiencyFast response timeSemiconductor/solid-state device testing/measurementMuffle furnacesLong pulseLight-emitting diode
Embodiments of the present invention pertain to substrate processing equipment and methods incorporating light emitting diodes (LEDs) for thermally processing substrates. Such light sources offer a variety of advantages including higher efficiency and more rapid response times. Pulse widths are selectable down to under a millisecond but can be for long pulses up to and exceeding a second. LEDs are preferable to tungsten-halogen lamps even in circumstances that allow longer processing times, since LEDs produce light with greater than 50% efficiency and tungsten-halogen lamps operate with less than 5% efficiency.
Owner:APPLIED MATERIALS INC
Methods and devices for treatment of tumors with nano-pulse stimulation
InactiveUS20180154142A1ProductionInhibit productionSurgical needlesControlling energy of instrumentDiseaseRegulatory T cell
Disclosed herein are methods and devices for stimulating an immune response to a disease in a subject, which involves passing sub-microsecond long pulses of electric fields having an amplitude between 5 kV / cm and 68 kV / cm through an abnormal growth of a subject sufficient to suppress myeloid-derived suppressor cell (MDSC) or regulatory T cell (Treg) production, increase adenosine triphosphate (ATP) or high mobility group box 1 (HMGB1) production, or stimulate dendritic cell activation in the subject.
Owner:OLD DOMINION UNIVERSITY RESEARCH FOUNDATION
Apparatus and method for indirect surface cleaning
ActiveUS20090038637A1Eliminate the effects ofElectrostatic cleaningOriginals for photomechanical treatmentParticulatesTarget surface
A method for laser surface cleaning of a target surface that has limited or no access to the environment directly above the surface to be cleaned. The method includes the ability to clean the surface with a reduced risk of substrate damage. The method includes direct laser excitation of a contaminated substrate surface and thermal transfer from the substrate to the contaminating particulate or contamination layer. The method also includes producing a thermally based removal and reducing a risk of substrate damage by keeping the temperature required to produce surface cleaning below the thermal damage level of the substrate material. In addition, the method includes reducing the risk of substrate damage by utilizing relatively long pulse-widths, providing for improved removal of small contaminants / particles, and directing the beam through a material disposed relative to the surface that is part of the substrates environmental enclosure.
Owner:BRUKER NANO INC
Coaxial-extraction long-pulse relativistic backward-wave oscillator
ActiveCN103137399AHigh Q valueOvercome the impact on work efficiencyTravelling-wave tubesTransit-tube collectorsWave structureMicrowave
The invention relates to a microwave component in the technical field of high power microwave and provides a coaxial-extraction long-pulse relativistic backward-wave oscillator. The coaxial-extraction long-pulse relativistic backward-wave oscillator comprises a cathode base, a cathode, an anode outer cylinder, a cut-off neck, a slow wave structure, a tapered waveguide, an output waveguide, a solenoidal field, a coaxial-extraction structure and a front-arranged reflection cavity. The coaxial-extraction structure is a cylinder. The front-arranged reflection cavity is disposed between the cut-off neck and the slow wave structure. According to the coaxial-extraction long-pulse relativistic backward-wave oscillator, a cylinder is adopted as the coaxial-extraction structure, and therefore the defect that the coaxial-extraction structure with a groove generates plasma is overcome, and meanwhile in the electromagnetic wave mode, function transformation can be carried out and installation can be achieved conveniently. The front-arranged reflection cavity is utilized to replace the cut-off neck so that the resonance characteristic of the front-arranged reflection cavity can be utilized to achieve the effect of the cut-off neck, electron beam scraping or electron beam bombardment of the front-arranged reflection cavity can be avoided, and premodulation of electron beams emitted from the cathode also can be carried out. Therefore, the coaxial-extraction long-pulse relativistic backward-wave oscillator is beneficial for subsequent beam wave interaction and improves power conversion efficiency of the component.
Owner:NAT UNIV OF DEFENSE TECH
Laser Guided and Laser Powered Energy Discharge Device
InactiveUS20160097616A1Readily and efficiently conductedGuaranteed normal transmissionStability-of-path spectrometersBeam/ray focussing/reflecting arrangementsHigh energyElectrical connection
The present invention relates to a laser guided and powered directed energy weapon that combines two different lasers to accurately and efficiently deliver a high energy electromagnetic pulse (EMP) to a target at long range. The method uses a high energy laser pulse with relatively long pulse duration focused in air to create a plasma ball which emits an intense EMP. Typically the long pulse duration of high energy lasers would severely limit focal accuracy and effective range because of air pressure variations and pollutants in the atmosphere. However the present invention uses a second ultrafast laser to create a long thin optical plasma filament between the variable location of the plasma ball and the target to act as a stable electrical connection or conducting wire. Consequently EMP can be efficiently channeled to the target via the optical filament, thereby dramatically increasing potential accuracy, range and energy delivery efficiency.
Owner:WEIGOLD DR ADAM MARK
Laser annealing apparatus and laser annealing method
InactiveUS20120234810A1Avoid smallInhibit temperature riseTransistorSemiconductor/solid-state device manufacturingLaser sourcePenetration depth
The present invention provides an efficient heat treatment such as activation treatment of impurities on a substrate such as a thick silicon wafer with large heat capacity by laser annealing.Provided is a laser annealing apparatus 1 for heat-treating a surface of a substrate 30 comprising: a pulse oscillation laser source 10 which generates a pulse laser with gentle rise time and long pulse width; a continuous wave laser source 20 which generates a near-infrared laser for assisting annealing; optical systems 12, 22 which shape and guide beams 15, 25 of the two types of lasers respectively so as to irradiate the surface of the substrate 30 therewith; and a moving device 3 which moves the substrate 30 relatively to the laser beams 15, 25 to allow scanning of the combined irradiation of the two types of laser beams. According to this apparatus, deep activation of impurities can be performed in a thick semiconductor substrate with large heat capacity while securing sufficient light penetration depth and thermal diffusion length therefor.
Owner:JAPAN STEEL WORKS LTD
High-power high-efficiency supercontinuum source
InactiveCN103022867AIncrease output powerLow costCladded optical fibreActive medium shape and constructionManufacturing technologyPicosecond
The invention provides a high-power high-efficiency supercontinuum source. By reasonably designing characteristics of photonic crystal fibers, long-pulse pump laser (picosecond, nanosecond laser) acts on a normal dispersion area for the photonic crystal fibers, the central wavelengths of stimulated front stages of Raman-Stokes peaks are positioned in an abnormal dispersion area close to a zero dispersion point of the photonic crystal fibers, and the stimulated Raman-Stokes laser peaks serve as a new pump source for stimulating supercontinuum and meet the requirement of an abnormal dispersion pump mechanism. The supercontinuum source simultaneously has the advantages of a normal dispersion pump mechanism and the abnormal dispersion pump mechanism, and high average output power and continuum output with high optical conversion efficiency and a wider supercontinuum range can be realized. By the aid of mature high-power fiber laser technology, photonic crystal fiber manufacturing technology and photonic crystal fiber post-treatment technology, system cost is reduced, and industrial production and application are facilitated.
Owner:NAT UNIV OF DEFENSE TECH
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com