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A Broadband Optical Parametric Chirped Pulse Amplifier

A chirped pulse and optical parametric technology, applied in the laser field, can solve the problems of energy backflow, gain bandwidth narrowing, etc., and achieve the effect of suppressing backflow, suppressing energy backflow, and improving performance.

Active Publication Date: 2019-02-22
SHENZHEN UNIV
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Problems solved by technology

[0006] The present invention provides a broadband optical parametric chirped pulse amplifier, aiming to simultaneously solve the energy backflow problem and the narrowing problem of gain bandwidth in the existing optical parametric chirped pulse amplifier, realize the synchronous optimization of conversion efficiency and gain bandwidth, and improve the optical efficiency. Performance of Parametric Chirped Pulse Amplifier

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  • A Broadband Optical Parametric Chirped Pulse Amplifier
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  • A Broadband Optical Parametric Chirped Pulse Amplifier

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0035] As the first embodiment of the present invention, such as figure 1 As shown, the present invention provides a broadband optical parametric chirped pulse amplifier, which includes a pulse laser stretcher 10, an optical coupling mirror 20, a periodically polarized crystal with a periodic domain inversion structure 40 , beam splitter 50 and pulse laser compressor 60 .

[0036] The pulse laser stretcher 10 is used to chirp and stretch the incident ultrashort pulse laser (generally, the stretched ultrashort pulse laser is called chirped pulse laser), so that the pulse width of the chirped pulse la...

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Abstract

A broadband optical parametric chirped-pulse amplifier applicable to the technical field of lasers. The amplifier comprises a narrow-band picosecond laser (70), a pulse laser stretcher (10), an optical coupling mirror (20), a beam expansion / contraction system (30), a periodically poled crystal (40), a spectroscope (50), and a pulse laser compressor (60), wherein the periodically poled crystal (40), which has a periodical domain inversion structure, is used for separating generated idler light from a chirped-pulse laser / pump light so as to suppress energy backflow after the broadband optical parametric chirped-pulse amplifier enters the stage of saturated amplification; and thus, the broad optical parametric chirped-pulse amplification of a broadband is realized. The broadband optical parametric chirped-pulse amplifier not only suppresses the backflow of signal light energy, but also has a very broad gain bandwidth as a result of the simultaneous optimization between pulse energy (conversion efficiency) and pulse width (gain bandwidth), such that the outputtable peak power of the broadband optical parametric chirped-pulse amplifier is greatly increased, and the performance of the optical parametric chirped-pulse amplifier is improved.

Description

technical field [0001] The invention belongs to the field of laser technology, in particular to a broadband optical parametric chirped pulse amplifier. Background technique [0002] Optical Parametric Chirped-Pulse Amplification (OPCPA) is a common technique for increasing the energy of ultrashort pulse lasers. The basic principle of OPCPA is to broaden the low-energy femtosecond ultrashort pulse laser into a picosecond or nanosecond chirped pulse (the pulse width after stretching is equivalent to the pump light), and then use the narrow-band high-energy pulse laser as the pump light , perform optical parametric amplification on the ultrashort pulse laser, and finally use a grating compressor to recompress the amplified chirped pulse signal to the femtosecond level at the output end. However, all parametric processes are subject to energy backflow. Backflow means that when the pump light is strongly attenuated and the parametric process enters saturation amplification, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/00G02F1/39
CPCG02F1/39G02F1/392H01S3/0057
Inventor 钟亥哲李瑛梁宇海杨建龙王世伟范滇元
Owner SHENZHEN UNIV
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