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Ultra-short pulse width self-correlation survey meter based on optical fibre device

An ultra-short pulse, autocorrelation technology, applied in the coupling of optical waveguides, instruments, optics, etc., can solve the problems of complex optical design and adjustment mechanism, high technical requirements in the testing process, inconvenient pulse measurement, etc., to avoid external stray light. effect, convenient and fast real-time measurement of pulse width, compact structure

Inactive Publication Date: 2010-03-17
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

The autocorrelator using volume optical components is very mature in technology and has entered the stage of commercialization. There are many kinds of pulse measurement autocorrelators on the market, but the optical design and adjustment mechanism are relatively complicated, and the technical requirements of the testing process are high. , the cycle is relatively long
Moreover, the autocorrelator of traditional volume optics does not match the fiber laser system, which brings inconvenience to pulse measurement in practical applications

Method used

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  • Ultra-short pulse width self-correlation survey meter based on optical fibre device
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  • Ultra-short pulse width self-correlation survey meter based on optical fibre device

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Embodiment Construction

[0024] See first figure 1 , figure 1It is a structural block diagram of an ultrashort pulse width autocorrelation measuring instrument based on an optical fiber device in the present invention. As can be seen from the figure, an embodiment of the ultrashort pulse width autocorrelation measuring instrument based on fiber optic devices of the present invention includes a 1: 1 polarization-independent fiber coupler 2, the first fiber collimator 3, the first high reflection mirror 4, the first A fiber polarization controller 5, a second fiber collimator 6, a second high reflection mirror 7, a micro-motion platform 8, a second fiber polarization controller 9, a third fiber collimator 10, a KTP frequency doubling crystal 11, a large Core diameter fiber 12, spectrometer 13 and computer 14, its positional relationship is as follows: the output terminal of the ultrashort pulse fiber laser 1 to be measured is connected with the arm a2-1 of described 1: 1 polarization-independent fiber ...

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Abstract

An ultra-short pulse width self-correlation survey meter based on an optical fibre device comprises a fibre optic coupler of 1:1, a first fibre collimator, a first high reflection mirror, a first optical fibre polarization controller, a second fibre collimator, a second high reflection mirror, a micro platform, a second optical fibre polarization controller, a third fibre collimator, a KTP frequency doubling crystal, a large core fibre, a spectrometer and a computer. The invention has the advantages of compact structure, simple adjustment and convenient use.

Description

technical field [0001] The invention relates to an ultrashort pulse, in particular to an ultrashort pulse width autocorrelation measuring instrument based on an optical fiber device. Background technique [0002] With the continuous development of laser technology, ultrashort pulses have been widely used in various fields such as optical communication, precision measurement, space technology, various industrial applications and national defense applications. In many high-tech fields, ultra-short pulse and ultra-high-intensity lasers show unique advantages and have irreplaceable application prospects. Compared with conventional solid-state laser systems, fiber lasers that use semiconductor lasers to pump ultrashort pulses have unique advantages in terms of heat dissipation, stability, beam quality, conversion efficiency, and volume. Therefore, fiber ultrashort pulse technology has become an important field of laser applications research topic. Pulse width is an important te...

Claims

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Application Information

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IPC IPC(8): G01J11/00G02B6/26G02F1/35
Inventor 徐钦峰叶青方祖捷潘政清蔡海文瞿荣辉刘琼李健
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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