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Super-short light impulse measuring apparatus based on SPIDER technology

A measurement device and ultra-short light technology, applied in the field of ultra-fast optics, can solve the problems of limited pulse broadening and complex structure, and achieve the effect of compact structure

Inactive Publication Date: 2007-03-28
EAST CHINA NORMAL UNIV
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  • Abstract
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Problems solved by technology

The disadvantage is that the device contains a pulse stretcher, which makes the structure more complicated, and the spectral shearing amount required for different measured pulse widths is also different.
In order to simplify the structure of the pulse stretcher, people have recently used a single glass block to achieve pulse stretching, but the amount of pulse stretching obtained by this method is very limited, and it can only be used for the measurement of optical pulses of several femtoseconds

Method used

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  • Super-short light impulse measuring apparatus based on SPIDER technology
  • Super-short light impulse measuring apparatus based on SPIDER technology

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Embodiment Construction

[0013] 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:

[0014] As shown in Figure 1-4, M1~M12 are metal mirrors, CM is a concave metal mirror, WP is a half-wave plate, BS is a beam splitter, C is a sum frequency crystal, DL is a disperser, and a TDL time delay device , P1-P2 are isosceles rectangular prisms, PL is an uncoated optical glass wedge with high refractive index.

[0015] As shown in Figure 1, the pulse to be measured is first incident on the surface of a high refractive index uncoated glass wedge (such as SF14) at a small angle, and the reflected light is focused by a concave mirror after passing through two pulse delay lines. nonlinear sum frequency crystal. The transmitted light enters the tunable disperser for pulse broadening and is divided into two beams by the prism be...

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Abstract

This invention relates to a super-short optical pulse measurement device based on the SPIDER technology, which applies a pulse dispersimeter with adjustable dispersion composed of two isosceles right-angle prisms of same size to generate chirp pulses, so that, this invention can test photo-pulses from several femtoseconds to several hundreds of femtoseconds, and the pulse dispersimeter is polarized and no light to incident photo-pulses and its dimension is not limited by the spectrum width of photo-pulses.

Description

technical field [0001] The present invention relates to ultrafast optical technology, and its technical core is to improve the traditional SPIDER device to make it suitable for more applications, and specifically relates to an ultrashort optical pulse measurement device based on SPIDER technology. Background technique [0002] Ultrashort laser pulses have been widely used in various fields such as physics, chemistry, materials, biomedicine, national defense, and industrial processing. Since the end of the 1980s, research on ultrashort optical pulses has never stopped. These include the generation and amplification technology of shorter and stronger ultrashort pulses, the diagnostic technology of ultrashort pulses, and the continuous development of various new application fields. Among various ultrashort pulse measurement techniques, autocorrelation measurement is the most commonly used technique, which is characterized by simplicity and ease of use. Its disadvantage is tha...

Claims

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Application Information

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IPC IPC(8): G01J11/00
Inventor 徐世祥韩晓红许智雄杨旋曾和平
Owner EAST CHINA NORMAL UNIV
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