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Super-strong chirped laser pulse step-by-step compression device

A laser pulse and compression device technology, applied in lasers, laser parts, optics, etc., can solve the problems of limiting the incident laser energy of the grating compressor, and achieve the effect of smoothing the spatial intensity distribution and reducing the spatial intensity modulation.

Active Publication Date: 2020-08-28
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

And ultra-intense lasers usually have large spatial intensity modulation, which also limits the incident laser energy of the grating compressor

Method used

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  • Super-strong chirped laser pulse step-by-step compression device
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  • Super-strong chirped laser pulse step-by-step compression device

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the protection scope of the present invention should not be limited thereby.

[0027] image 3 It is a schematic diagram of the optical path structure of the embodiment of the ultra-intense chirped laser pulse step-by-step compression device of the present invention. As can be seen from the figure, the structure of the embodiment of the ultra-strong chirped laser pulse step-by-step compression device of the present invention is as figure 2 The composition along the front of the laser pulse is the pre-compression module, the main compression module, and the final compression module,

[0028] In this embodiment, the ultra-strong chirped laser pulse step-by-step compression device is as follows: image 3 , mainly includes: a pre-compression module composed of small apex angle prism pairs 1, 2, and a reflector 3; an incident reflector 4, the first grat...

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Abstract

A super-strong chirped laser pulse step-by-step compression device comprises a light beam smoothing and initial pre-compression module composed of prism peer-to-peer negative dispersion elements, a pulse main compression module composed of a grating compressor and the like, and a final compression module composed of a space-time focusing process and (or) a self-compression process in a transparentmedium sheet. By utilizing the smoothing effect of the pre-compression module on the spatial intensity modulation of the incident laser, the modulation of the spatial intensity of the laser is reduced, and the damage of the spatial modulation of the laser intensity to the incident grating and the emergent grating is reduced, so that the energy of the incident laser can be improved, and stronger laser output can be obtained at a single stage. And in the pulse self-compression process of the final compression module, the spectrum can be further broadened, and the laser pulse can be compressed to obtain shorter laser pulse output.

Description

technical field [0001] The present invention relates to ultra-intensive and ultra-short lasers, in particular to an ultra-intensive chirped laser pulse step-by-step compression device, which is used for chirped pulse amplification of petawatt high peak power lasers or pulses in optical parametric chirped pulse amplification systems Compress terminal. It is suitable for increasing the compressed output laser energy or reducing the laser pulse width, that is, increasing the laser peak power and focusing power density. Background technique [0002] Due to important applications in major frontier scientific researches such as astrophysics, laser electron or proton acceleration, and laser plasma physics, ultra-intense and ultra-short laser pulses have achieved rapid development in recent years. This super-powerful laser can provide unprecedented new experimental means and extreme physical conditions for human beings to explore cutting-edge science such as vacuum physics. At pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/10G02B27/44G02B27/09
CPCH01S3/10023G02B27/44G02B27/0972
Inventor 刘军李儒新
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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