7 results about "Beam dump" patented technology

The utility model discloses a femtosecond pulse laser filament control system, which comprises a laser transmitter, a power meter, a target chamber, a beam collector, a vacuum pump, an optical fiber probe and an optical fiber spectrometer, a reflecting mirror I and a diaphragm are arranged between the laser transmitter and the power meter; a convex lens I is arranged between the reflecting mirror II and the target chamber; one side of the target chamber is provided with a light hole, the light hole is opposite to the optical fiber probe, a convex lens II is arranged between the light hole and the optical fiber probe, the optical fiber probe is connected with an optical fiber spectrometer through an optical fiber, and the optical fiber spectrometer is used for being connected with an upper computer; wherein the vacuum pump is communicated with the interior of the target chamber. According to the utility model, the size of the laser beam can be adjusted, the length of the laser filament can be controllably adjusted, and the influence of different environments on the spectral signal-to-noise ratio can be obtained, so that a stable and reliable basis is provided for a subsequent controllable LIBS (Laser-induced Breakdown Spectroscopy) experiment.

This relates to laser processing equipment and its components. [Solution] The laser processing apparatus includes a positioner positioned within a beam path through which a laser energy beam can propagate. A controller may be used to control the operation of the positioner to deflect the beam path within a first primary angular range and a second primary angular range, and to deflect the beam path to multiple angles within each of the first and second primary angular ranges. In other embodiments, the integrated beam dump system includes a frame and a pick-off mirror and beam dump connected to the frame. In yet another embodiment, the wavefront correction optical component includes a mirror having a reflective surface having a shape characterized by specific ratios of Fringe-Zernike terms Z4 and Z9. Many more embodiments are disclosed.

Embodiments of a laser beam dump assembly are disclosed. In one embodiment, the laser beam dump assembly includes a beam dump housing having a housing body and a channel formed therein, wherein the channel is sized to allow an incident laser beam to propagate therethrough to an interior space formed in the housing body. The laser beam dump assembly further includes a beam scattering member having a curved scattering surface configured to scatter or reflect a first portion of the incident laser beam and allow a second portion of the incident laser beam to be absorbed by the scattering member as thermal energy. A heat sink is coupled to the beam dump housing and in thermal communication with the beam scattering member, wherein the heat sink is configured to absorb and dissipate the thermal energy from the beam scattering member.

Method and apparatus 10a for the harmonic generation of laser frequencies in which an input fundamental laser beam 20 is split into two orthogonal polarisations, each polarisation being directed around an independent optical path by at least one steering element 26b, 30b, 32b, 36b, prior to a series of harmonic crystals 40, 42, to optimise conversion efficiency. Independently controlling both polarisations of the fundamental laser beam provides independent alignment optimisation of phase-matching parameters without major cross- talk / coupling with other parameters. The invention allows for a compact arrangement, spatial and temporal walk-off compensation, separate temporal adjustment between the two fundamental polarised beams for temporal compensation in the third harmonic or fifth harmonic processes, adjustment of the photon ratio, single-pulse generation, reduction of fundamental depletion for generation of the third harmonic or fifth harmonic and use of a common beam dump 16 for unconverted light 54. [Fig. 5]

Numerous embodiments are disclosed. In one, a laser-processing apparatus includes a positioner arranged within a beam path along which a beam of laser energy is propagatable. A controller may be used to control an operation of the positioner to deflect the beam path within first and second primary angular ranges, and to deflect the beam path to a plurality of angles within each of the first and second primary angular ranges. In another, an integrated beam dump system includes a frame; and a pickoff mirror and beam dump coupled to the frame. In still another, a wavefront correction optic includes a mirror having a reflective surface having a shape characterized by a particular ratio of fringe Zernike terms Z4 and Z9. Many more embodiments are disclosed.

The invention belongs to the technical field of quantum optics, and particularly relates to a system and method for generating a space compression light array by using Laguerre Gaussian beams, and the system comprises a laser, a first half-wave plate, a first polarization splitting prism, a first beam collector, a second half-wave plate, a second polarization splitting prism, a small reflector, and a spatial light modulator. The system comprises two large reflectors, a third half-wave plate, two third polarization splitting prisms, a second beam collector, a rubidium atom chamber, two quarter-wave plates, two fourth polarization splitting prisms and two balance zero-beat detectors. The first light beam collector and the second light beam collector are arranged on one side of the first polarization beam splitting prism and one side of the third polarization beam splitting prism respectively, the small reflector is arranged on one side of the second polarization beam splitting prism, and the spatial light modulator is in wired connection with the display controller. And the crosstalk problem of the traditional scheme is avoided.

This invention provides a high-order harmonic generation device based on four-aperture mirrors, comprising: a driving laser module, a first aperture mirror, a second aperture mirror, a first beam collector, a focusing mirror, a gas target, a third aperture mirror, a second beam collector, a fourth aperture mirror, a third beam collector, a metal film, a vacuum cavity, and a vacuum module. The first aperture mirror, the second aperture mirror, the focusing mirror, the gas target, the third aperture mirror, the fourth aperture mirror, and the metal film are disposed within the vacuum cavity. Through the synergistic effect of the four aperture mirrors, ring shaping, two-stage spatial filtering and efficient separation of the driving laser, as well as lossless transmission of high-order harmonics are achieved. This not only successfully attenuates the hundred-watt-level driving laser by more than a thousand times, solving the problem of optical component damage under high power; but also ensures high-throughput output of high-order harmonics while achieving efficient separation. The generated harmonic spectrum has a wide range and a small divergence angle, making it ideal as a light source for time-resolved pump-probe experiments.