Volume holographic grating forming device for ultra-short pulsed laser beam

An ultra-short pulse laser, volume holographic grating technology, applied in optics, nonlinear optics, instruments, etc., can solve problems such as no consideration of influence, and achieve the effects of adjustable range, large beam selectivity, and easy operation

Inactive Publication Date: 2006-07-26
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

Most of the media used to record volume holographic gratings are anisotropic, but this technology does not consi

Method used

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  • Volume holographic grating forming device for ultra-short pulsed laser beam
  • Volume holographic grating forming device for ultra-short pulsed laser beam
  • Volume holographic grating forming device for ultra-short pulsed laser beam

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[0024] The present invention will be described in detail below in conjunction with the drawings.

[0025] See first figure 1 , figure 1 It is a schematic diagram of the basic structure of a specific embodiment of the ultrashort pulse laser beam volume holographic grating shaping device of the present invention. It can be seen from the figure that the ultrashort pulse laser beam volume holographic grating shaping device of the present invention includes a crystal 1 on which a volume holographic grating is recorded. The grating vector K of the volume holographic grating is consistent with the optical axis direction of the crystal 1, and the crystal 1 is in front of There is a broadband polarization rotator 2 in the incident direction of the pulsed laser beam L0 to be shaped, a second polarizer 4 is arranged in the direction of the light beam L1 transmitted by the crystal 1, and a third polarizer 5 is arranged in the direction of the diffracted light beam L2 of the crystal 1.

[00...

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Abstract

Disclosed is an ultra-short pulse laser light beam body holographic grating shaping apparatus which includes a for recording the body holographic grating which light axis direction is consistent with the body holographic grating vector, in the incoming direction of pulse laser light beam for shaping in front of the crystal, there is a broad band polarizing spinner; in the crystal transmission light beam direction, there is a second polarizer; in the crystal light beam diffraction direction, there is a third polarizer. Compared with prior technology, the invention can realize pulse laser light beam shaping via modulating the polarization status, and the modulating range can be changed by selecting grating parameter and the shaping range is adjustable.

Description

technical field [0001] The invention relates to a pulse laser beam shaping device, in particular to an ultrashort pulse laser beam volume holographic grating shaping device based on volume holographic grating polarization modulation, which can be applied to technical fields such as laser measurement and information processing. Background technique [0002] With the development of pulsed laser beam generation technology, optical pulse shaping technology, as a supplementary method for ultrashort pulse laser beam generation, provides unprecedented control over ultrashort optical pulse waveforms for ultrafast spectroscopy, nonlinear fiber optics, and strong field physics. means have been extensively studied. People have developed a series of technical methods for optical waveform synthesis or pulse shaping. Among them, for the pulsed laser beam larger than 1ns, it can be directly shaped by the Kerr effect of the electro-optic medium, and for shorter pulses, it can be shaped by ...

Claims

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Application Information

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IPC IPC(8): G02F1/01
Inventor 王春花刘立人闫爱民周煜刘德安王吉明
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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