399results about "Optical devices for laser" patented technology

The invention discloses an extensible multi-path beam combination laser assembly and a laser, and relates to the technical field of laser beam combination. The extensible multi-path beam combining laser assembly comprises a half-wave plate, a reflecting element, a polaroid, a Q switch, a controller and 2n basic lasers. The basic laser can output initial pulse laser with the polarization direction being the first direction, every two of the 2n initial pulse laser beams can be combined into 2n-1 pulse laser beams, and every two of the 2n-1 pulse laser beams can be combined into 2n-2 pulse laser beams until the 2n pulse laser beams are combined into one beam of output pulse laser. When the Q switch is turned on, the polarization direction of the pulse laser penetrating through the Q switch can be deflected by 90 degrees. When the pulse laser beams are combined, the first pulse laser beam passes through a Q switch and a reflecting element which are arranged along the light path of the first pulse laser beam, the polarization direction is the first direction or the second direction, and the first pulse laser beam is reflected to a polaroid arranged along the light path of the second pulse laser beam to be combined. Therefore, beam combination of multiple paths of laser is achieved, and even if light path faults exist, the multiple paths of laser after beam combination can be output.

The invention discloses a miniaturized ultra-strong and ultra-short laser dispersion compensation device and method. The miniaturized ultra-strong and ultra-short laser dispersion compensation device comprises a stretcher, a pre-compensation compressor, an amplifier and a compressor. The pulse laser is firstly broadened by the stretcher, partial second-order and third-order dispersion is compensated by the pre-compensation compressor, partial high-order dispersion is increased, then the pulse laser is amplified by the amplifier, and finally the pulse laser is compressed to be close to the Fourier limit pulse width by the compressor. According to the invention, the pulse laser can be broadened to hundreds of picoseconds or even nanoseconds to be amplified under the existing condition and then compressed to be close to the Fourier limit pulse width, and good light beam quality is ensured.

A light source including: a pulse generator for providing an initial sequence of light pulses, the pulse generator including an optical source for producing optical pulses; a modulator in communication with the optical source for increasing or decreasing the selected number of pulses provided by the pulse generator in the selected time period; first and second optical arms, for propagating, respectively, first and second sequences of light pulses, wherein the first optical arm includes a first manipulator configured to generate the first sequence of light pulses from the initial sequence of light pulses, wherein the light source includes a nonlinear optical element arranged to receive the first sequence of light pulses or the second sequence of light pulses, and an optical switch arranged to switch either the first sequence of light pulses or the second sequence of light pulses for reception by the nonlinear optical element.

The invention relates to a laser protection device (8) with a flatly extending waveguide element (14) which is covered on the front side by an absorber material (13), and on which a scattering structure (15) for scattering laser radiation (19) is arranged on the rear side. The laser protection device (8) also comprises at least one detector (17) for detecting the laser radiation (19) which can arrive at the detector (17) by punctiform destruction of the absorber material (13) and subsequent guiding in the waveguide element (14). The laser protection device (8) is designed to output a signal to cause a source (2) of the laser radiation (19) to be switched off when it is detected by means of the detector (17). The invention also relates to a laser optics assembly (4) equipped with the laser protection device (8), and to a laser system (1) with the former, and to a method for operating a laser system (1) of this type.

A correction optical element (COE) for a multi-channeled coherent beam combining (CBC) system that uses a fiber array comprising multiple optical fibers and a single collimation array comprising multiple collimating lenses, for coherent combining of a corresponding array of optical beams directed through the fiber array. The COE is configured for customized and segmented correction of collimation-based optical aberrations, caused at least due to misalignments between each corresponding optical fiber's Lij output end and a center of a corresponding collimating lens Lij.

The invention relates to the technical field of lasers, and provides a double-gain-medium Q-switched laser and a constant-power pulse width adjusting method.The laser comprises a first pumping source, a second pumping source, an optical fiber beam combiner, a beam shaping system and a laser resonant cavity, the laser resonant cavity comprises a reflecting mirror, a first gain medium, a second gain medium, a polarization selector, a quarter-wave plate, a Q switch and an output mirror which are arranged in sequence; the first gain medium is used for absorbing first pumping light, the second gain medium is used for absorbing second pumping light, and the pumping power of the first pumping source and the pumping power of the second pumping source can be independently controlled. By changing the pumping power of the two pumping sources, real-time adjustment of the pulse width of the laser under the constant output power is achieved, the structure is compact, and control is easy and convenient.

A method and system for generating deep ultraviolet (DUV) laser light is disclosed, in one embodiment the DUV laser system includes a fiber laser source configured to emit a poised fundamental laser beam in the near-infrared with a pulse duration of less than 400 femtoseconds (fs), a nonlinear crystal assembly comprising first, second, and third nonlinear crystals that is configured to convert the fundamental laser beam to produce a fifth harmonic laser beam having a wavelength in a range from 200 nanometers (nm) to 230 nm, and at least one compensation plate disposed in at least one position preceding at least one of the first, second, and third nonlinear crystals and configured such that a pair of pulsed laser beams transmitted through the at least one compensation plate are spatially and temporally overlapped within the at least one of the first, second, and third nonlinear crystals.

The invention relates to the technical field of laser, and discloses a laser device capable of outputting different wavelengths and energy and having AI learning, which comprises a laser box, and is characterized in that a laser light source device, an integrated control module and an AI intelligent module are arranged in the laser box, the laser light source device is connected with the integrated control module, and the AI intelligent module is connected with the integrated control module. The integrated control module is connected with the AI intelligent module. The laser device capable of outputting different wavelengths and energy and having the AI intelligent function is simple in structure and easy to implement, can realize multi-wavelength and multi-energy output, meets different application requirements, monitors, feeds back, regulates and controls in time, is equipped with the AI intelligent function, automatically regulates and optimizes laser output, has both safety and accuracy, and is suitable for popularization and application. Potential eye and skin injuries are avoided in medical application, efficiency and performance are improved in industrial application, implementation cost is low, and high economic benefits are achieved.

Provided is a laser lift-off apparatus, and a substrate lift-off method using a laser lift-off apparatus. The laser lift-off apparatus is configured to convert a first beam into a second beam having a width in a first direction and in a second direction different from the first direction, the laser lift-off apparatus including a laser beam generator configured to generate the first beam, a homogenizer configured to homogenize the first beam, and a beam cutter including a first beam cutter and a second beam cutter defining at least two openings having different respective lengths in the first direction, and configured to generate the second beam by transmitting and blocking respective portions of the first beam.

A quantum computing system, comprising: an optical source for generating a continuous-wave, cw, optical carrier signal at a carrier wavelength; a confinement chamber; and optical intensity modulation apparatus comprising; an optical modulator operative to modulate the continuous-wave, cw, optical carrier signal to generate at least one sideband on the optical carrier signal, a radio frequency, RF, signal generator, operative to provide an RF drive signal to the optical modulator; a first optical waveguide grating having a central reflection wavelength corresponding to one of said sideband(s); and optical routing apparatus configured to direct the optical carrier signal and the at least one sideband to the first optical waveguide grating; and to direct a reflected optical signal from the first optical waveguide grating towards an output to form an output optical signal to be delivered to the confinement chamber.

An optical assembly to be used between a target positioned within a vacuum chamber and a laser source comprises: a housing; a frame; a lens carried by the frame; a plurality of spiral flexures each having a respective proximal end coupled to the frame; a plurality of flexure actuators, each flexure actuator coupled between the housing and a distal end of a respective spiral flexure; and a plurality of translation actuators coupled between the housing and the frame, wherein the frame includes a pair of elongate passageways orthogonal to one another and wherein each translation actuator comprises a motor having an eccentric output shaft received within a respective elongate passageway.

The invention relates to the technical field of slice lasers, in particular to a Yb-based high-power pulse slice laser with an adjustable pulse width. Comprising a pumping source, a multi-pass pumping module and a resonant cavity which are sequentially arranged along a light path, and the resonant cavity is composed of a first end mirror, a thin-sheet crystal, a thin-film polaroid, a quarter-wave plate, an electro-optical switch and a second end mirror according to the light path sequence. The slice crystal serves as a gain medium and is used for pumping pump light and generating a laser beam; the thin film polarizer highly transmits horizontal polarized light and highly reflects vertical polarized light and is used for outputting laser in the cavity, the quarter-wave plate and the electro-optical switch are used for controlling loss in the cavity so as to output nanosecond pulses, and the plane mirror is used as a resonant cavity end mirror. The pulse width output by the slice laser can be effectively regulated and controlled, the regulation range reaches ten to hundreds of nanoseconds, and the power output by the laser does not change along with the change of the pulse width.

A laser device includes an oscillator outputting pulse laser light; an amplifier amplifying the pulse laser light; an optical pulse stretcher extending a pulse width of the pulse laser light; a beam divergence angle adjuster including an upstream lens arranged on an optical path of the pulse laser light, a downstream lens arranged downstream of the upstream lens, and an optical path length changing mechanism for changing an inter-lens optical path length between the upstream lens and the downstream lens; and a processor controlling the beam divergence angle adjuster and obtaining a repetition frequency or a duty of the pulse laser light, and to change, when the repetition frequency or the duty changes by a preset threshold or more, the inter-lens optical path length so that the beam divergence angle of the extended pulse laser light becomes small in accordance with the repetition frequency or the duty after the change.

The laser system (1) is configured to provide a laser line (L) in a working plane (WP) for line irradiation of an object (7). The laser line (L) extends to a significant extent in a first direction (x) and to a lesser extent in a second direction (y). The laser system (1) comprises a laser source (3) for providing a laser beam (3A) as a basis for an elongated input laser beam (13A) propagating along a propagation direction (z), and a homogenizing and focusing unit (60) for homogenizing the strip-shaped laser beam (13A) to form the laser line (L). The laser system (1) is particularly suitable for providing a laser line (L) that can be spliced ​​to another laser line (L') of a corresponding further laser system (1').

The disclosure relates to an optical system comprising a laser source (1) which generates pulsed laser radiation consisting of a temporal sequence of laser pulses in an input laser beam (EL), a splitting element (2) which follows the laser source (1) in the course of the beam and splits each of the laser pulses into laser pulse replicas separated spatially and / or temporally from one another, a combination element (4) which follows the splitting element (2) in the course of the beam and superimposes the laser pulse replicas in a respective laser pulse in an output laser beam. It is the task of the disclosure to provide an improved optical system compared to the prior art. It should be possible to generate particularly short and thus spectrally broadband laser pulses of high power with the optical system. The disclosure proposes that at least one multipass cell (3) is arranged in the beam path between the splitting element (2) and the combination element (4), through which the laser pulse replicas propagate, wherein the multipass cell (3) contains a medium in which the laser pulse replicas undergo nonlinear spectral broadening.

A laser system comprises a femtosecond laser, and a beam delivery system configured to deliver and scan a laser beam emanating from the femtosecond laser onto wood, based on a desired graphene design, wherein graphene is formed on the wood by the laser beam. A device capable of being fabricated by the laser system may include a temperature sensor which detects a temperature by measuring resistance of the graphene, a heater or a boiler which converts electrical energy to thermal energy, or electrical interconnects.

A gas laser device that amplifies laser light output from a laser oscillator by means of an amplifier and emits the amplified laser light, the amplifier being provided with: a chamber device that amplifies laser light from the laser oscillator; a resonator that resonates the laser light emitted from the chamber device between both sides sandwiching the chamber device; and a beam expander, the resonator including an output coupling mirror disposed on one side sandwiching the chamber device, through which a portion of the laser beam emitted from the chamber device passes, and which reflects the other portion of the laser beam emitted from the chamber device so as to return to the chamber device, the beam expander including: a convex mirror, which is disposed on the other side of the chamber device, and which reflects the other portion of the laser beam emitted from the chamber device so as to return the other portion of the laser beam to the chamber device; a reflection mirror disposed between the chamber device and the output coupling mirror and reflecting the laser beam emitted from the chamber device so as to enlarge the beam width of the laser beam; and a concave mirror that reflects the laser beam reflected by the convex mirror toward the output coupling mirror so as to perform collimation such that the amplified beam width of the laser beam is constant.

The power receiver includes a beam homogenizer that takes portions of the power beam and spreads them out to cover a substantial portion (or all) of the power converter surface, respectively. The beam homogenizer may not have reflective sidewalls and may have an aspect ratio as low as 2-5. The normalized deviation of the beam irradiance at the surface may be reduced by a factor of 2-5 or more.

A new laser beam transport system comprises a structure and at least one detector. The structure comprises an inner tube, defining an input end and an output end, and an outer tube surrounding the inner tube so as to define a volume therebetween. The volume is closed such that ambient radiation cannot enter the volume. The at least one detector is configured to detect the presence of radiation in the volume and operable to generate a signal if an amount of radiation above a threshold level is detected. A new laser system comprises such a laser beam transport system and a radiation source operable to generate a radiation beam that propagates through an interior volume defined by the inner tube, from the input end to the output end. A new laser-produced plasma radiation source comprises such a laser system.

A hybrid coherent beam combining (CBC) and spectral beam combining (SBC) fiber laser amplifier system including a beam shaper array assembly and a beam source that provides a plurality of beams having a low fill factor profile. The assembly includes an input beam shaper array having a plurality of rectilinear input cells positioned adjacent to each other that are shaped to cause the beam to expand as it propagates away from the input array to be converted from the low fill factor profile to a high fill factor profile. The assembly further includes an output beam shaper array having a plurality of output cells positioned adjacent to each other that are shaped to cause the beam to stop expanding so that the output array provides a plurality of adjacent beams with minimal overlap and a minimal gap between the beams.

A light source, including: a pulse generator for providing an initial sequence of light pulses, the initial sequence of light pulses including an initial number of light pulses within a predetermined time period, first and second optical arms, for propagating, respectively, first and second sequences of light pulses, each derived from the initial sequence of light pulses, wherein the first optical arm includes a first manipulator configured to generate the first sequence of light pulses from the initial sequence of light pulses, wherein the light source includes a nonlinear optical element arranged to receive the first sequence of light pulses or the second sequence of light pulses, and an optical switch arranged to switch that either the first sequence of light pulses or the second sequence of light pulses is received by the nonlinear optical element.

The invention relates to a device (10) for amplifying a laser pulse which comprises a divider section (14) for dividing the laser pulse into multiple sub pulses (43) and for introducing a time delay between the sub pulses (43), a compressor section (15) for compressing the temporally divided sub pulses (43) and a combiner section (17) for combining the compressed sub pulses (44) to one compressed laser pulse (45).

A pulse generation unit generates a driving voltage signal including a pulse signal. A laser oscillation module oscillates a laser beam by carrying out, based on the driving voltage signal, a pulse oscillating operation. When the power command signal has a voltage command value corresponding to a laser power greater than a predetermined laser power during a high period, the pulse generation unit modulates, in a pulsed manner, a voltage value of the high period of the driving voltage signal so as to alternately repeat, for a preset period of time from a rising time of the high period of the driving voltage signal, a high state in which the voltage value is maintained and a low state in which the voltage value is lowered by a predetermined voltage value without being lowered to a voltage value of a low period of the driving voltage signal.

The invention relates to a laser system (1) comprising a solid amplifying medium (2) capable of emitting an amplified beam (4) in a propagation direction (D), the amplified beam having a first angle of divergence in a first plane (Px) including the propagation direction, and a second angle of divergence in a second plane including the propagation direction and separate from the first plane, the second angle of divergence being separate from the first angle of divergence; and an optical device (3). According to the invention, the optical device comprises a lens (31) arranged so as to refract the amplified beam into an outgoing beam (5), the lens having a first radius of curvature in the first plane and a second radius of curvature in the second plane, the second radius of curvature being separate from the first radius of curvature.

The present invention relates to a laser system for laser machining a workpiece (104) using an interference pattern (124), comprising: at least one laser beam source (106) for providing a plurality of coherent laser beams (112); an amplification device (118) for forming amplified coherent laser beams (113) by amplifying the coherent laser beams (112); a phase adjustment device (114) for adjusting a respective phase difference between the coherent laser beams (112) and / or the amplified coherent laser beams (113); and a beam convergence region (130) in which output laser beams (102) based on the amplified coherent laser beams (113) or corresponding to the amplified coherent laser beams (113) converge to form the interference pattern (104), wherein at least beam portions from different output laser beams (102) converge in the beam convergence region (130).

An impulse width expansion device of one aspect of the present disclosure has a polarization beam splitter and a transfer optical system. The transfer optical system has: a 1 / 4 wave mirror pair including a first 1 / 4 wave mirror that reflects a pulse laser with a phase shift of 1 / 4 wavelength and a second 1 / 4 wave mirror that reflects the pulse laser after the reflection by the first 1 / 4 wave mirror with a phase shift of 1 / 4 wavelength; and a mirror pair that is disposed on an optical path before and after the 1 / 4 wave mirror pair or an optical path between the 1 / 4 wave mirror pair. The transfer optical system transfers an image of the input pulse laser in the polarization beam splitter on an optical path between the 1 / 4 wave mirror pair as a first transfer image at equal magnification, and transfers the first transfer image in the polarization beam splitter as a second transfer image at equal magnification.

This invention discloses a high-speed sweeping fiber optic light source. The specific device includes: a mode-locked pulse light source, an optical fiber amplifier, a highly nonlinear optical fiber, and a dispersion-compensating optical fiber. The passively mode-locked pulse light source outputs a high repetition rate, wide-spectrum mode-locked pulse. Its dispersion propagation follows a parabolic differential equation similar to one-dimensional paraxial diffraction, analogous to Fraunhofer diffraction. The pulse is amplified outside the cavity by an optical fiber amplifier to increase the laser pulse energy and peak power. Then, it is broadened by the highly nonlinear optical fiber to obtain a supercontinuum light source. Finally, the pulse is stretched by a highly dispersive medium provided by the dispersive optical fiber, and the pulse frequency domain spectrum is mapped to a time domain waveform, thereby realizing a high-speed sweeping frequency light source in the time domain.

A system for ignition of a nuclear fusion process comprises a laser source (101) configured to direct a laser beam (102) to a fuel system (103) of the nuclear fusion process The laser source is configured to generate the laser beam such that the laser beam is an orbital angular momentum OAM carrying laser beam. The laser beam carrying the OAM is capable of generating, via the inverse Faraday effect, a strong axial magnetic field in plasma, whose magnitude grows as a square of an OAM parameter indicative of vorticity of the laser beam. The strong axial magnetic field is, in turn, capable of accelerating particles and collimating and guiding a particle beam to ignite the nuclear fusion process. Furthermore, the laser beam carrying the OAM lowers electron thermal conductivity thus allowing a near- adiabatic compression at a lower implosion velocity, and enhances plasma confinement during the nuclear fusion process.

In an example, the present invention provides a system for amplifying a laser pulse. The system comprises a coherent beam combining (CBC) system coupled to an optical enhancement cavity each of which is configured to operably work together to amplify a laser pulse from a laser source through the CBC and then through the cavity.

The invention provides a laser light source and a target laser forming method, and the laser light source comprises a first laser which is used for generating first laser, the first laser comprises first single-frequency pulse laser and stray light, and the first single-frequency pulse laser has a first wavelength; the second laser is used for generating second laser, the second laser comprises single-frequency laser with a second wavelength, and the second wavelength is larger than the first wavelength; and the optical waveguide is used for inputting the first laser and the second laser, the first laser and the second laser generate stimulated Brillouin scattering in the optical waveguide to generate second single-frequency pulse laser, and the propagation direction of the second single-frequency pulse laser is opposite to that of the first single-frequency pulse laser. According to the laser, stray light in the generated second single-frequency pulse can be reduced, and the signal-to-noise ratio is improved.