Broadband optical parameter chirped pulse amplifier

A chirped pulse and optical parametric technology, applied in the laser field, can solve problems such as energy backflow and gain bandwidth narrowing, and achieve the effects of suppressing backflow, suppressing energy backflow, and wide gain bandwidth

Active Publication Date: 2017-06-30
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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[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

The invention relates to the technical field of laser, and provides a broadband optical parameter chirped pulse amplifier. The broadband optical parameter chirped pulse amplifier comprises a narrow-band picoseconds laser device, a pulse laser stretcher, an optical coupling mirror, a beam expanding / contracting system, periodic poling crystal, a spectroscope and a pulse laser compressor. The periodic poling crystal with the periodic domain inversion structure is used for separating generated idler frequency light from chirped pulse laser / pumping light to inhibit energy backflow after the broadband optical parameter chirped pulse amplifier is in a saturated amplification state, and therefore broad optical parameter chirped pulse amplification of a broadband is achieved. The broadband optical parameter chirped pulse amplifier is capable of inhibiting backflow of signal light energy and has extremely wide gain bandwidth, benefited from synchronous optimization of pulse energy (conversion efficiency) and pulse width (gain bandwidth), outputable peak-peak power of the broadband optical parameter chirped pulse amplifier is greatly promoted, and performance of the broadband optical parameter 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 ...

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Application Information

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Patent Type & Authority Applications(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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