Backmixing non-conjugated grating Martinez pulse stretcher-compressor

A technology of reverse mixing and stretching, which is applied in nonlinear optics, instruments, optics, etc., can solve problems such as impossible dispersion compensation, and achieve the effect of reducing distortion and low material dispersion

Inactive Publication Date: 2005-03-16
TIANJIN UNIV
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Problems solved by technology

Therefore, in the actual existence of material dispersion in the amplifier and aberrations in the stretcher using spherica

Method used

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  • Backmixing non-conjugated grating Martinez pulse stretcher-compressor

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[0014] The inverse hybrid non-conjugate grating pair Martinez-type pulse stretcher-compressor structure is shown in the accompanying drawing. The stretcher is composed of a concave spherical mirror 1-1, a grating 1-2, and plane mirrors 1-3, 1-4, 1-5, and 1-6. The process of broadening the pulse by the stretcher is as follows: after the incident pulse is reflected by the plane mirrors 1-6 and 1-5 in turn, it is incident on the grating 1-2 at a certain angle; the spectrum diffracted by the grating reaches the concave spherical mirror 1-1, and reflected on the plane mirror 1-3; then reflected back to the concave spherical mirror 1-1; the concave spherical mirror 1-1 again reflects the pulse back to the grating 1-2 for diffraction, and incident on the plane reflection On the mirror 1-4; the plane mirror 1-4 returns the pulse in the reverse direction, is stretched once again, and outputs along the incident direction. Since the flat mirrors 1-4 are slightly tilted in the vertical d...

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Abstract

This invention discloses a backmixing non-conjugated grating pair Martinez impulse stretcher and compressor applied in the compensation impulse enlarger material with low color dispersion, which belongs to the structure technique of stretcher and compressor in the femtosecond enlarge system. The said Martinez stretcher comprises concave spherical reflecting lens, plane reflecting lens and grating. The said compressor comprises plane reflecting lens, inner right angle reflecting lens and grating, which is characterized by the following: the grating fringe density of the stretcher is larger than that of the compressor. The advantages of this invention are the following: backmixing non-conjugated grating pair Martinez impulse stretcher and compressor are applied in the multiple-pass enlarger with material of low dispersion and can effectively compensate the material dispersion in the enlarger and reduces the deformation of femtosecond impulse.

Description

technical field [0001] The invention relates to an inverse hybrid non-conjugated grating pair Martinez-type pulse stretcher-compressor system suitable for compensating lower material dispersion (multipass amplifier) ​​in chirped pulse amplifiers, belonging to femtosecond laser amplification system stretching Structural techniques of compressors and compressors. Background technique [0002] The stretcher and compressor in the chirped pulse amplification system are the core of the amplification system, and they must be used in pairs. The function of the stretcher is to stretch the femtosecond seed pulse output by the oscillator to the order of picoseconds or even nanoseconds; the function of the compressor is to compress the amplified high-power stretched pulse back to the width of the incident pulse. The principle behind compressing a chirped amplified pulse back to the same magnitude as the incident pulse is that if the dispersion of the additio...

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Application Information

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IPC IPC(8): G02F1/35
Inventor 张志刚王清月柴路孙大睿刘永军
Owner TIANJIN UNIV
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