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Optical parameter chirped pulse amplifying device

A chirped pulse and amplifying device technology, used in optics, nonlinear optics, instruments, etc., can solve problems such as complex structure and reduced signal-to-noise ratio, and achieve the requirements of improving signal-to-noise ratio, eliminating synchronization accuracy, and compact structure. Effect

Inactive Publication Date: 2012-09-12
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

These methods require additional equipment and complex structures, and the filtering device will additionally introduce high-order nonlinear effects, reducing the signal-to-noise ratio

Method used

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  • Optical parameter chirped pulse amplifying device
  • Optical parameter chirped pulse amplifying device

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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] see first figure 1 , figure 1 It is a structural schematic diagram of the OPCPA device of the present invention. It can be seen from the figure that the optical parametric chirped pulse amplification device of the present invention is composed of: the chirped pulse sequence output from the chirped pulse mode-locked laser passes through the beam splitter and is divided into two beams, one of which passes through the regenerative amplifier and the frequency doubling crystal in turn. After that, it is irradiated on the nonlinear crystal, and another beam is output after passing through the stretcher, the nonlinear crystal and the compressor in sequence.

[0021] The beam splitter splits the input optical signal into two beams of optical signals with different light in...

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Abstract

An optical parameter chirped pulse amplifying device comprises a chirped pulse mode-locked laser, an optical splitter, a low-temperature ytterbium-doped yttrium aluminium garnet (Yb: YAG) regenerative amplifier, a frequency doubling crystal, a stretcher, a nonlinear crystal and a compressor. The isogenous optical parameter chirped pulse amplifying (OPCPA) device is realized by means of excellent thermal management performance of Yb: YAG crystals and the gain narrowing effect of the regenerative amplifier. The device provided by the invention is simple and compact and high in signal-to-noise ratio; the repetition frequency of the device can be increased to several thousand hertz kHz; and the device can be applicable for picosecond (ps) level of cascading OPCPA.

Description

technical field [0001] The invention is an optical parametric chirped pulse amplification (hereinafter referred to as OPCPA) device, which is mainly suitable for improving the signal-to-noise ratio and repetition frequency of OPCPA. Its advantages are simple and compact structure, high signal-to-noise ratio, and repetition frequency up to several kHz . Background technique [0002] Ultrashort laser pulses with high signal-to-noise ratio and high repetition rate have broad application prospects in the fields of laser processing, laser medicine, laser physics and chemistry. However, in the kilojoule petawatt ultrashort laser pulse targeting experiment, the parametric fluorescence during the optical parametric amplification process will lead to a decrease in the signal-to-noise ratio of OPCPA, and the pre-pulse or main pulse base will change or destroy the target material before the main laser pulse arrives. Resulting in the failure of the target shooting experiment. The curr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/39G02F1/35
Inventor 瞿叶玺李学春潘雪黄文发彭宇杰王江峰张攀政汪小超张鹏
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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