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
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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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