Chirp pulse regeneration amplification method for pump light enhanced light parameter

A chirped pulse, regenerative amplification technology, applied to lasers, laser components, electrical components, etc., can solve the problems of signal light saturation effect, pump light cannot be used efficiently, etc., and achieve the effect of improving conversion efficiency

A chirped pulse, regenerative amplification technology, applied to lasers, laser components, electrical components, etc., can solve the problems of signal light saturation effect, pump light cannot be used efficiently, etc., and achieve the effect of improving conversion efficiency

CN101262116AInactive Publication Date: 2008-09-10EAST CHINA NORMAL UNIV
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  • Chirp pulse regeneration amplification method for pump light enhanced light parameter
  • Chirp pulse regeneration amplification method for pump light enhanced light parameter
  • Chirp pulse regeneration amplification method for pump light enhanced light parameter

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Embodiment Construction

[0016] The features of the present invention and other related features will be further described in detail below in conjunction with the accompanying drawings through embodiments, so as to facilitate the understanding of those skilled in the art:

[0017] like figure 1 As shown in -5, the symbols in the figure respectively represent: τ is the time τ for the light to circulate in the cavity once determined by the cavity length, a is the leading edge of the pump pulse that first enters the cavity, and b is the pump pulse within the first two T periods. The intensity of the superimposed pump pulse, c is the intensity of the superimposed pump pulse in the first three T times, d is the pulse intensity after the final superposition and enhancement, e is the signal light before the parametric action, and f is the pump light before the parametric action Intensity, g is the signal light intensity distribution after the first parameter action, h is the pump light intensity distribution...

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Abstract

The invention relates to a novel optical parametric chirped pulse amplification method which overlays and enhances original pump light in a cavity by making use of the structure of a ring cavity so as to enhance the power density of the pump light and then reuses the pump light by making use of optical path difference of signal light and the pump light in respective cavities thereof so as to improve transformation efficiency. At last, the method adopts a cavity dumping technique, chooses optimal parametric amplification times and controls the saturation effect during the parametric process to overlay and enhance the original pump light in the cavity. The method makes use of the structure of the ring cavity to ensure the pulse front edge and back edge of the pump light are overlaid in the cavity and has the advantages of making use of pumping source with wide pulse and high energy to obtain high energy burst pulse output and improving the transformation efficiency of the pump light to the utmost extent.

Description

technical field [0001] The invention relates to a novel optical parametric chirped pulse amplification method, which belongs to the ultrafast laser pulse amplification technology. The method combines the characteristics of multi-pass parametric amplification and intracavity superposition enhancement, and can realize the full utilization of pumping light energy, thereby Optimize conversion efficiency. Background technique [0002] High peak power and high single pulse energy are important means to study the interaction of matter under extreme physical conditions, so how to obtain ultrashort and intense laser pulses has become one of the hot research fields at home and abroad. At present, there are three main methods of optical pulse amplification: one is the chirped pulse (CPA) amplification method, which is to broaden the femtosecond seed optical pulse in the time domain, then amplify it through a laser gain medium, and finally use a compressor to compress the pulse width to...

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Application Information

Patent Timeline
10 Sep 2008
Publication
CN101262116A
IPC
H01S3/091; H01S3/083; H01S3/10; H01S3/00
Inventors
许金山; 徐世祥