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9058 results about "Erbium lasers" patented technology

Erbium laser resurfacing is designed to remove surface-level and moderately deep lines and wrinkles on the face, hands, neck, or chest. One of the benefits of erbium laser resurfacing is minimal burning of surrounding tissue.

Copper conductor annealing process employing high speed optical annealing with a low temperature-deposited optical absorber layer

A method of forming a conductor in a thin film structure on a semiconductor substrate includes forming high aspect ratio openings in a base layer having vertical side walls, depositing a dielectric barrier layer comprising a dielectric compound of a barrier metal on the surfaces of the high aspect ratio openings including the vertical side walls, depositing a metal barrier layer comprising the barrier metal on the first barrier layer, depositing a main conductor species seed layer on the metal barrier layer and depositing a main conductor layer. The method further includes annealing the main conductor layer by (a) directing light from an array of continuous wave lasers into a line of light extending at least partially across the thin film structure, and (b) translating the line of light relative to the thin film structure in a direction transverse to the line of light. The method of Claim 1 further comprising, prior to the annealing step, depositing an amorphous carbon optical absorber layer on the main conductor layer. The step of depositing an amorphous carbon optical absorber layer includes introducing a carbon-containing process gas into a reactor chamber containing the substrate in a process zone of the reactor, applying RF source power to an external reentrant conduit of the reactor to generate a reentrant toroidal RF plasma current passing through the process zone and applying a bias voltage to the substrate.

Power regulated medical underskin irradiation treament system

InactiveUS20040199151A1Procedure is limitedControlling energy of instrumentCatheterVeinVascular lumen
A system and method for controllably releasing laser radiation in percutaneous laser treatment is disclosed. In a preferred embodiment, an optical fiber is inserted below the skin or into a vascular lumen to a predetermined point. The fiber is connected to a source of electromagnetic radiation such as a laser. Radiation is then delivered to the treatment site while the fiber is simultaneously drawn out to the entry point. The fiber is manually withdrawn at a predetermined rate and radiation is administered in a constant power or energy level. To maintain a constant proper energy density, the speed of withdrawal is measured and sent to a controlling mechanism. The controlling mechanism modifies the power emitted, pulse length or pulse rate to ensure that the vein or tissue receives a consistent dose of energy. In one preferred embodiment, an imaging device provides the controlling device with speed information based on fiber surface textural properties or based on a series of bar code like markings. In another embodiment, additional information is collected, such as vein diameter prior to treatment, position of the distal end of the fiber, and/or impact measurements such as vibration or temperature during treatment, and the controlling mechanism adjusts output power or pulse rate in response to measurements to maintain a desired power density.

Laser imaging radar device and distance measurement method thereof

ActiveCN103616696AFast ranging speedProbe cycle shortenedElectromagnetic wave reradiationEngineeringRange gate
The invention provides a laser imaging radar device and a distance measurement method thereof. The laser imaging radar device and the distance measurement method thereof aims at the problem that an existing distance range gate laser imaging radar is low in distance resolution. The laser imaging radar device comprises a laser device, a laser modulation unit, an optical antenna unit, a detecting unit, a data processing unit and an image processing unit, wherein the detecting unit is composed of a counter, a gate controller and an array detector, and the data processing unit is composed of an accumulator and a correlator. According to the distance measurement method, an information loading process is carried out on laser signals with constant amplitude by using a phase code pulse amplitude modulation mode. The laser imaging radar device and the distance measurement method thereof have the advantages that the equipment and the method combine the advantages of long detecting distances of the distance ranging gate layer imaging radar and the advantage of high distance measurement resolution of the pulse phase coding mode, and meanwhile the detect of low distance measurement resolution of the distance ranging gate layer imaging radar and the detect of low imaging speed of the pulse phase coding mode are avoided.

Sensing method of optical-fiber Bragg grating laser device

The invention relates to a sensing method with an optical-fiber Bragg grating laser device. An optical-fiber Bragg grating is used as a reflector of the resonant cavity, an active optical fiber capable of generating sufficient gains is added, and a double wavelength/multiple wavelength optical-fiber Bragg grating laser device is formed under the action of a pump light source and used as a sensor. When the outside strain, temperature and other physical quantities act on the sensing system, the beat signal frequency among the double wavelength or multiple wavelength laser can shift, and counter stress, temperature and other physical parameters can be measured precisely by detecting the beat signal frequency information. The invention has the advantages of simple manufacture, stable and reliable operation, stable measurement result and high precision, and is free from the interference of light intensity, polarization and other optical information quantities. The multipoint distribution sensing measurement can be realized in a frequency-division multiplexing mode. An electrooptical modulator is added before the spectrum analyzer starts detection so as to randomly adjust the beat signal frequency, thereby greatly reducing the spectral range of the spectrum analyzer and reducing the detection cost.

Fully distributed optical fiber strain and vibration sensing method and sensor

The invention discloses a fully distributed optical fiber strain and vibration sensor comprising a laser (1), a first coupler (2), a pulse modulation module (3), an optical amplifier (4), a circulator (5), a sensing optical fiber (6), a fiber bragg grating (7), a polarization scrambler, a second coupler, a balance photoelectric detector, an analyzer, a photoelectric detector (12) and a signal processing unit. Continuous light output by the laser (1) is split into two paths through the first coupler (2), wherein one path is used as reference light and is accessed to a first input end of the second coupler (9) through the polarization scrambler (8); and the second path is processed by the pulse modulation module (3) and the optical amplifier (4) and then used as detection pulse light to be injected into a first port of the circulator (5). In the invention, Brillouin optical time domain reflectometry (BOTDR) and polarization optical time domain reflectometry (POTDR) are simultaneously utilized for respectively and correspondingly carrying out fully distributed measurement on strain and vibration on a signal optical fiber, the defects of a system with single BOTDR or POTDR are overcome, and the false alarm rate or missed report rate of the system is decreased.

Terahertz pulse measurement-based burning temperature sensing device and method

ActiveCN103076107AAchieving Wavelength Division Electro-Optic SamplingEasy accessThermometers using physical/chemical changesBeam splitterGrating
The invention discloses a terahertz pulse measurement-based burning temperature sensing device and a terahertz pulse measurement-based burning temperature sensing method. Laser is emitted from a femtosecond laser device, and is divided into reference laser and detection laser through a beam splitter, the detection laser is focused on a photoconduction antenna type terahertz emitter, terahertz pulses emitted by the terahertz emitter are focused on a ZnTe crystal through an off-axis paraboloid lens group; and the reference layer is collimated and is coincident with terahertz waves focused on the ZnTe crystal after passing through a semi-transmission and self-reflection mirror, parallel grating groups and a polarizing film, the terahertz waves are modulated by using Pockels effect of the ZnTe crystal, and image signals corresponding to collected first reference layer carrying terahertz pulse strength information and second reference laser not carrying the terahertz pulse strength information are input into a computer by a CCD (Charge Coupling Device) detector for subsequence processing. According to the invention, the precision and speed of the non-contact combustion measurement method are increased, and the non-contact measurement of combustion object temperature and temperature distribution is realized.

High-temperature powder bed system for laser additive manufacture

The invention discloses a high-temperature powder bed system for laser additive manufacture. The system comprises a working cavity, a laser device, a workbench, an electromagnetic heating layer, a heat insulation component and a laminar flow temperature uniforming component, the workbench is arranged in the working cavity, the electromagnetic heating layer is mainly composed of an electromagnetic induction plate and a coil, the electromagnetic heating layer is placed on the lower surface of the workbench and is attached to the workbench, and heat can be directly conducted to the workbench. A cooling flow way is arranged in the workbench, the bottom face and the side face of the electromagnetic heating layer are surrounded by the heat insulation component, and heat insulation and heat preservation of the electromagnetic heating layer can be achieved. The laminar flow temperature uniforming component is arranged outside the working cavity and used for achieving air flow circulation in the working cavity, and even temperature distribution of the workbench can be achieved. According to the part size, the work table board can be heated to be at the high temperature, heat preservation is performed, and temperature uniformization and the cooling functions after machining can be achieved. The aims of protecting the systems, and improving energy utilization rate and heating efficiency can be achieved.

Laser cleaning system for rubber module

InactiveCN102886363AEasy to cleanIncrease laser output powerCleaning processes and apparatusCoupling lossEngineering
The invention provides a laser cleaning system for a rubber module, and the laser cleaning system comprises a laser cleaning head and a laser control system, wherein the laser cleaning head comprises a laser device and a beam expander, a scanning galvanometer is arranged in the output light direction of the beam expander, a focusing lens is arranged on the reflecting light path of the scanning galvanometer, and the light path output end of the focusing lens is used for cleaning articles; the laser device comprises a total reflector, an acousto-optic Q-switch, a semiconductor pumping module and an output mirror which are sequentially arranged on the light path; and the light-emitting switch of the laser device, the Q-switching drive module of the acousto-optic Q-switch, the power supply of the semiconductor pumping module, and the drive unit of the scanning galvanometer are controlled by a laser control system respectively. According to the invention, the semiconductor pumping solid pulse laser device is adopted and integrated on a cleaning machining head, the output power of laser is increased by means of acousto-optic Q-switching, and the coupling loss caused by optical fibre transmission is avoided, so that portable-type machining in a handheld mode or a manipulator clamping mode can be realized, and efficient cleaning for the rubber module can be finished.

Refrigeration-type coaxial packaging light-emitting tube core

The invention provides a refrigeration-type coaxial packaging light-emitting tube core, which comprises a transistor outline (TO) tube shell, a refrigerator, a heat sink, a laser carrier and a sealing tube cap, wherein the TO tube shell comprises a tube shell base. At least seven pins are arranged around the tube shell base; the pins comprise a radio frequency (RF) signal pin, and the laser carrier with a microstrip line is arranged on the RF signal pin; the radiating surface of the refrigerator and the surface of the tube shell base are fixed in the manner of sticking; the refrigeration surface of the refrigerator and the surface of the heat sink are fixed in the manner of sticking; the heat sink and the surface of the laser carrier with a matched resistor and the microstrip line are fixed in the manner of sticking; an electric absorption modulation laser chip, a backlight detector, a thermistor and a power filter capacitor are fixedly arranged on the surface of the laser carrier in the manner of sticking; one end of the microstrip line of the laser carrier is connected with the anode of an electric absorption modulator; and the other end of the microstrip line of the laser carrier is connected with a microstrip line on the RF signal pin through a conductor wire. When installation is performed, the emitted light outlet optical axis of the laser chip and the optical axis (OA) of the central axis of the TO tube shell are coaxial. Optical steering elements are not needed, the process is simple, and the signal distortion can be reduced.

Industrial robot online zero position calibration device based on all-dimensional point constraint and method

ActiveCN102706277AOvercome the disadvantages of immobilityFlexible realization of attitude changesUsing optical meansSignal processing circuitsPoint light
The invention discloses an industrial robot online zero position calibration device based on all-dimensional point constraint and a method of the device. The device comprises a laser point light source, and an all-dimensional receiving device, wherein a laser serves as the laser point light source; the all-dimensional receiving device consists of a PSD (position sensitive detector), an inner ring stand, an outer ring stand, a signal processing circuit, a data acquisition card, an industrial control computer, and an industrial robot controller; the inner ring stand and the outer ring stand are connected together through a globe joint to form a ring stand; the laser is rigidly fixed on the tail end of an industrial robot body through a connection device; two link rods have a globe joint at one ends; the globe joints are connected with the inner ring stand; the other ends of the two link rods are rigidly connected with the PSD; and the PSD is located at the center of the ring stand. The industrial robot online zero position calibration device provided by the invention not only overcomes the disadvantages caused by fixing the PSD stably in the prior art, but also reduces the error generated by projecting the round laser beam onto the center point of the PSD obliquely.

Natural gas pipeline leak detection system based on unmanned aerial vehicle

The invention relates to a natural gas pipeline leak detection system based on an unmanned aerial vehicle. The natural gas pipeline leak detection system based on the unmanned aerial vehicle is mainly characterized in that an inspection tour can be made on a natural gas pipeline, leak points and the leak diffusion range of the pipeline can be found in time, and loss caused by leak is reduced. According to the technical scheme, the unmanned aerial vehicle is provided with a small cargo compartment, and a natural gas laser detection system is installed in the small cargo compartment. Laser beams emitted by a laser device are divided into two paths, wherein one path is emitted through an emitting antenna, passes through leaking gas and then is reflected, the reflected lasers are received by a receiving antenna, and a first detector receives reflected signals; and the other path perpendicularly enters the soil surface nearby the pipeline, and is received by a second detector after being reflected. The natural gas pipeline leak detection system based on the unmanned aerial vehicle can simultaneously detect the natural gas leak concentration and a soil surface temperature anomaly caused by natural gas leak, thereby achieving the purpose of inspecting natural gas pipeline leak.
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