A kind of transmission pulse compression grating device and preparation method thereof
A pulse compression and transmission technology, applied in the direction of diffraction grating, etc., can solve the problems of large substrate deformation, affecting output laser aberration, substrate deformation, etc., and achieve the effect of improving the utilization rate of laser light energy and increasing the laser damage threshold
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[0025] Embodiment one: see attached figure 2 As shown, a transmission pulse compression grating device includes a fused silica substrate 1, a transmission pulse compression grating microstructure 2 is arranged on one optical surface of the fused silica substrate 1, and on the other side of the fused silica substrate 1 A high-frequency anti-reflection grating microstructure 3 is arranged on an opposite optical surface. Its electron microscope photograph sees appendix Figure 5 And attached Image 6 shown.
[0026] In this embodiment, the wavelength range of the pulse compression grating is 700nm-900nm, TE polarization, the center wavelength is 800nm, the incident angle of the beam is 30 degrees, the spatial frequency of the pulse compression grating is 1250line / mm, and the grating material is fused silica.
[0027] Such as figure 2 As shown, the incident laser beam 4 is incident on the high-frequency anti-reflection grating microstructure 3 to obtain the zero-order transm...
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