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A pulse broadener structure which is convenient to be expanded

A stretcher and pulse technology, which is applied in the field of pulse stretcher structure, can solve the problems of a fiber-coupled offner stretcher with a large amount of stretch without miniaturization, unfavorable large-scale application, and harsh use environment, and achieves outstanding substantive characteristics, Easy to apply, the effect of reducing the overall size

Active Publication Date: 2018-12-21
广东华奕激光技术有限公司
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AI Technical Summary

Problems solved by technology

The Offner stretcher is often used in solid-state scientific research ultrafast lasers because it can withstand large power and can adjust and match its parameters. It is also bulky and harsh in use, which is not conducive to large-scale applications such as industry.
[0003] No miniaturized fiber-coupled offner stretcher with large stretching amount has been developed so far

Method used

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  • A pulse broadener structure which is convenient to be expanded

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Embodiment Construction

[0014] The features of the present invention and other relevant features are described in further detail below through the embodiments, so as to facilitate the understanding of those skilled in the art:

[0015] Such as figure 1 As shown, a pulse stretcher structure that is easy to expand includes a fiber collimator 1, a first plane mirror 2, a grating 3, a concave spherical mirror 4, a convex mirror 5, a second plane mirror 6, and Nth Three plane mirrors 7, N is a natural number; wherein, the fiber collimator 1 and the N third plane mirrors 7 are all located on the same outside of the first plane mirror 2 and their positions are staggered, the first The plane reflector 2 is used to reflect the collimated outgoing light of the fiber collimator 1 onto the grating 3 and reflect the light reflected by the third plane reflector 7 onto the grating 3, and use In order to reflect the light diffracted by the grating 3 to the first plane mirror 2 into the fiber collimator 1 or onto th...

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Abstract

The invention discloses a pulse broadener structure which is convenient to be expanded, it employs a grating, a concave spherical mirror, the convex mirror to broaden the light, and employing a firstplanar mirror, second planar mirror, and a plurality of third planar mirrors to realize multiple back and forth broadening of the optical pulse, and at least one third planar mirror is provided for vertical reflection of light, As such, a folding structure is employe, on the one hand, On the other hand, adding the third planar mirror can increase the number of back and forth broadening of the light, which has good expansibility. Compared with the conventional offner broadening device, it is advantageous to reduce the overall size of the pulse broadening device under the condition of the same broadening amount, and it has outstanding substantive characteristics and remarkable progress. In addition, a fiber collimator is used to input and output light, which is convenient for the use of fiber ultrafast lasers.

Description

technical field [0001] The invention relates to a structure of a pulse stretcher which is easy to expand. Background technique [0002] With the continuous development of industrial femtosecond ultrafast lasers, the amplification of ultrashort pulses has been a very headache for the scientific research community for a long time. Extremely short pulses are not conducive to absorbing energy in the amplifier cutoff, and high peak power can easily damage optical components in the amplifier. Part of the problem can be solved by enlarging the cross-sectional area of ​​the pulse, but the enlarging area brings about a reduction in the energy density, which is not conducive to absorbing the stored energy of the gain medium, and the size of the spot diameter can be enlarged because of the difficulty of crystal growth. limit. In order to amplify ultra-high peak power laser pulses, Gerard Mourou and Donna Strickland invented the chirped pulse amplification technology, for which they w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/00H01S3/067H01S3/10
CPCH01S3/0057H01S3/0675H01S3/06791H01S3/10023
Inventor 梁崇智朱海波
Owner 广东华奕激光技术有限公司
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