Transmission type pulse compression grating device and preparation method thereof

A pulse compression and transmission technology, applied in diffraction grating and other directions, can solve the problems of large deformation of the substrate, affecting the output laser aberration, substrate deformation, etc., to improve the utilization rate of laser light energy and improve the laser damage threshold.
CN104155709AActive Publication Date: 2014-11-19SUZHOU UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
SUZHOU UNIV
Publication Date
2014-11-19

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Abstract

The invention discloses a transmission type pulse compression grating device and a preparation method thereof. The device comprises a fused silica substrate and a transmission type pulse compression grating arranged at one optical surface of the fused silica substrate. The transmission type pulse compression grating device is characterized in that the other opposite optical surface of the fused silica substrate is provided with a high-frequency antireflection grating micro structure. A method with the combination of holographic lithography and ion etching transfer is employed to realize the preparation of the device. According to the device and the method, the beam dispersion and antireflection can be realized at the same time through one device, the laser damage threshold and light energy utilization rate of the transmission type pulse compression grating are raised, and the device and the method have an important application value in the field of ultra-intense and ultrafast laser.
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Description

technical field

[0001] The invention relates to an optical element and a preparation method thereof, in particular to a high damage threshold transmissive pulse compression grating and a preparation method thereof. Background technique

[0002] Laser pulse chirp amplification and compression technology is one of the important technologies to realize ultra-intensive and ultra-fast lasers, and pulse compression gratings are widely used in intense laser pulse compression systems. Since the pulse compression grating directly interacts with the output strong laser, it is extremely vulnerable to physical damage from the laser. Therefore, how to improve its laser flux and withstand capacity has become one of the main bottlenecks in the output pulse energy intensity of the laser. To solve the above problems, one approach is to increase the damage threshold of the pulse compression grating, and the other approach is to increase the aperture of the pulse compression grating. Obviousl...

Claims

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