Device for maintaining stability of polarization direction and energy of optical signals with low repetition frequency and short pulse

A technology of repetition frequency and polarization direction, applied in lasers, laser parts, electrical components, etc., can solve the problems of difficulty in real-time compensation of optical pulse signals, difficulty in energy collection, and low repetition frequency, and achieves simple structure and easy system integration. , the effect of reducing the measurement error

Active Publication Date: 2011-03-16
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

However, because the optical signal transmitted in the low repetition frequency short pulse high power fiber laser system is a low repetition frequency optical pulse signal, which is characterized by narrow pulse width and low repetition frequency, it is difficult to c

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  • Device for maintaining stability of polarization direction and energy of optical signals with low repetition frequency and short pulse
  • Device for maintaining stability of polarization direction and energy of optical signals with low repetition frequency and short pulse
  • Device for maintaining stability of polarization direction and energy of optical signals with low repetition frequency and short pulse

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[0024] The present invention will be further described below in conjunction with the embodiments and drawings, but the protection scope of the present invention should not be limited by this.

[0025] See first figure 1 , figure 2 with image 3 , figure 1 It is a schematic diagram of the structure of the device for maintaining the polarization direction and energy stability of the low repetition rate short pulse optical signal of the present invention, figure 2 Is a schematic diagram of the structure of the feedback unit of the present invention, image 3 It is a schematic diagram of the structure of the control unit of the present invention. It can be seen from the figure that the device of the present invention for maintaining the polarization direction and energy stability of the low repetition rate short pulse optical signal consists of a continuous fiber laser 1, an optical pulse generator 2, a polarization control unit 3, an analyzer 4, a fiber splitter 5, and feedback Uni...

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Abstract

The invention relates to a device for maintaining the stability of the polarization direction and energy of optical signals with low repetition frequency and short pulse. The device comprises a continuous optical fiber laser, an optical pulse generator, a polarization control unit, an analyzer, an optical fiber beam splitter, a feedback unit, a digital controller and a signal synchronizer, wherein the polarization control unit comprises a polarization control module and a driving circuit thereof; the driving circuit supplies driving voltage to the polarization control module; and the feedback unit successively comprises a photoelectric detector, an integrating circuit, a high-speed electric amplifier and a high-speed acquisition card. The device of the invention can maintain the stability of the polarization direction and output energy of the optical signals with low repetition frequency and short pulse, and has simple structure, ensures accurate control, is easy for system integration and the like.

Description

technical field [0001] The invention relates to the polarization state and output energy of an optical pulse signal, in particular to a device for maintaining the polarization direction and energy stability of a low repetition frequency short pulse optical signal. The collection of pulsed optical signal energy, combined with feedback control technology, keeps the polarization direction and output energy of low repetition rate short pulsed optical signal stable. Background technique [0002] In the low repetition rate short pulse high power fiber laser system, due to the needs of physical experiments, it is required that the polarization direction of the final output optical pulse signal of the system be kept stable and the output energy be kept at the maximum value. By using a polarizer at the output end of the high-power optical fiber system, the polarization direction of the optical pulse signal finally output by the system can be kept in the direction of the polarizer. H...

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Application Information

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IPC IPC(8): H01S3/13
Inventor 张鹏姜有恩李学春李国扬潘雪
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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