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Two-channel optical beam reducer with attenuation function

A dual-channel, optical technology, used in optics, optical components, instruments, etc., can solve problems such as pulse width distortion and damage to optical components

Active Publication Date: 2016-12-07
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Claims
  • Application Information

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Problems solved by technology

Different from traditional laser pulses, ultra-short pulses of picosecond and femtosecond levels have extremely high power density due to their narrow pulse width, and are prone to self-phase modulation and self-focusing effects, so that the pulse width Distortion, even damage to optical components

Method used

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  • Two-channel optical beam reducer with attenuation function
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  • Two-channel optical beam reducer with attenuation function

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0020] When the high-energy ultra-short pulse works according to the design value, the output state is: energy 1000J, pulse width 1-10ps adjustable, and the corresponding power is 10 +15 W. In the technical solution proposed by the present invention, in order to realize the parameter diagnosis of the laser pulse under this condition, the high-energy ultrashort pulse becomes the measured pulse 1 after passing through a sampling mirror. The transmittance of the sampling mirror is T=1.5%. The measured pulse 1 first enters the first beam splitter 2 , and then enters the dual-channel second beam splitter 6 through the first lens 3 , the gate aperture plate 4 , and the second lens 5 . After the measured pulse 1 leaves the second spectroscope 6, two diagnostic pulses are output ...

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Abstract

The invention provides a dual-channel optical beam shrinking device with an attenuation function. The dual-channel optical beam shrinking device is characterized in that the device comprises a first reflection spectroscope in the incident light direction, and the first reflection spectroscope is sequentially provided with a first lens, a gating small-hole plate, a second lens and a second reflection spectroscope in the reflected light direction; the second reflection spectroscope is provided with a near-field translation mirror in the reflected light direction, and the near-field translation mirror and the reflected light form 45 degrees; the near-field translation mirror is sequentially provided with a collimating spectroscope and a collimating monitoring unit in the reflected light direction, and the collimating spectroscope is sequentially provided with a diagnosis reflection mirror and a diagnosis device in the reflected light direction. By means of the dual-channel optical beam shrinking device, quick and accurate switching between a high-attenuation channel and a low-attenuation channel can be achieved, and the using requirement of different output energies is met.

Description

technical field [0001] The invention relates to ultrashort pulses, in particular to a dual-channel optical beam shrinker device with attenuation function, which is used to realize the beam aperture transformation of ultrashort pulses with large energy, and provides a full-aperture range for subsequent laser parameter diagnosis and testing equipment. , Low B-integral, damage-resistant optical beam shrinker. Background technique [0002] In the process of diagnosing and analyzing laser parameters, an optical beam shrinking system is generally used to transform the beam diameter of the measured pulse and realize the coupling of the measured pulse with subsequent testing equipment. Li Chaohong applied for the invention patent "Photoelectric Imaging Tracking System Based on Spectral Prism" in 2006, Zhang Xingyu applied for the invention patent "Solid Material Raman Gain Coefficient Measurement System and Method" in 2010, and Liang Jingqiu applied for the invention patent "Time an...

Claims

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Application Information

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IPC IPC(8): G02B27/09
CPCG02B27/0927G02B27/10
Inventor 欧阳小平刘代中秦海棠刘崇朱宝强朱健强
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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