Novel prism pair pulse chromatic dispersion compensator

A dispersion compensator and prism pair technology, which is applied in the direction of instruments, lasers, phonon exciters, etc., can solve the problems of increasing the lateral size of the light spot on the collimating prism, increasing the distance between the vertices of the prism, and the bulky volume of the compensator, etc., to achieve Compact structure, small prism interval, good compensation effect

Inactive Publication Date: 2008-02-27
EAST CHINA NORMAL UNIV
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Problems solved by technology

When using a prism pair for dispersion compensation, the prism pair itself will also introduce material dispersion. This part of the dispersion must also be taken into account when designing the prism pair, thereby increasing the distance between the vertices of the two prisms required and increasing the difficulty of adjustment. At the same time Conversely, the lateral size of the spot on the collimating prism is increased, thus increasing the material dispersion introduced by the prism itself.
This effect increases the difficulty of adjustment and reduces the compensation effect while making the compensator bulky

Method used

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  • Novel prism pair pulse chromatic dispersion compensator
  • Novel prism pair pulse chromatic dispersion compensator

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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] As shown in Figure 3-5, the symbols in the figure are: concave reflector CR1~CR4, high reflector HR, output coupling mirror OC, dispersion prism P1, collimating prism P2, Ti:Sapphire laser crystal Ti:S.

[0018] The Brewster's angle prism pair pulse dispersion compensator of the present embodiment is made of two identical rectangular prisms, and the apex angle size of these two prisms is determined by the Brewster's angle working condition of the center wavelength of the laser pulse, here as the center The complementary angle of Brewster's angle of wavelength, the two prisms are relatively parallel. The role of the first prism is a dispersion prism, and its rectangular surface adjacent to the vertex is the incident surface, ...

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Abstract

The invention relates to a new impulse dispersion compensator by the prism. It is made up of two right-angle prisms which are parallel. The top angle is the complement angle of Brewster's angle corresponding to the light impulse center wavelength. The invention can decrease the material dispersion caused by the Brewster's angle prism and the compensating effect is ideal, the structure is compact.

Description

technical field [0001] The invention relates to ultrashort laser pulses, and specifically describes a novel prism pair pulse dispersion compensator. Background technique [0002] The scientific research of ultra-intensive and ultra-short lasers focuses on the innovative development of ultra-intense and ultra-short lasers, the interaction between ultra-intense and ultra-short lasers and matter, and the frontier foundations in interdisciplinary and related high-tech fields. It is a very important scientific frontier field in science and even modern science. In this field, pulse stretching / compression technology is one of the key unit technologies. The main idea is to compensate the chirp phase of the pulse as much as possible. There are two types of pulse dispersion compensators commonly used at present: [0003] One is the grating pulse dispersion compensator. There are two forms, as shown in Figure 1. In Fig. 1(a), the grating pairs are placed antiparallel, and there ar...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/12G02F1/35H01S3/00
Inventor 徐世祥董华芳蔡华杨旋王燕玲
Owner EAST CHINA NORMAL UNIV
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