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Measurement device of stimulated Brillouin frequency shift during amplification of single single-frequency pulse

A technology of stimulated Brillouin and measuring device, applied in the direction of instruments, etc., can solve the problems of difficulty in capturing single pulse signal, high cost, low measurement accuracy, etc., and achieve the effects of low price, simple device and high sensitivity

Inactive Publication Date: 2010-05-05
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0005] In order to overcome the shortcomings of the existing stimulated Brillouin frequency shift measurement equipment when the single pulse signal is amplified, it is difficult to capture the single pulse signal, the measurement accuracy is low, and the cost is high. , Simple experimental equipment and low-cost single-frequency single-pulse amplification Stimulated Brillouin frequency shift measurement device

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  • Measurement device of stimulated Brillouin frequency shift during amplification of single single-frequency pulse
  • Measurement device of stimulated Brillouin frequency shift during amplification of single single-frequency pulse
  • Measurement device of stimulated Brillouin frequency shift during amplification of single single-frequency pulse

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] refer to figure 1 , a device for measuring the stimulated Brillouin frequency shift during single-frequency single-pulse amplification, including a single-frequency pulse signal source 1 with a repetition frequency of 1 Hz, two 2×1 wavelength division multiplexers WDM, F-P interferometer and CCD Display 8, the single-frequency pulse signal source 1 is connected to one end of a 2×1 wavelength division multiplexer WDM2, and the output end of the 2×1 wavelength division multiplexer WDM2 is connected to a signal amplifier 3, and the signal amplifier 3 Connect one end of another 2×1 wavelength division multiplexer WDM4, the other end of a 2×1 wavelength division multiplexer WDM2 is fused with the other end of another 2×1 wavelength division multiplexer WDM4, the other The output end of the 2×1 wavelength division multiplexer WDM4 is connected to the F-P interferomet...

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Abstract

The invention relates to a measurement device of stimulated Brillouin frequency shift during the amplification of a single single-frequency pulse, comprising a single-frequency pulse signal source with the repetition frequency of 1 Hz, two 2*1 wavelength division multiplexers WDM, an F-P interferometer and a CCD display, wherein the single-frequency pulse signal source is connected with one end of one 2*1 wavelength division multiplexer WDM, and the output end of the 2*1 wavelength division multiplexer WDM 1 is connected with an optical fiber signal amplifier; the optical fiber signal amplifier is connected with one end of the other 2*1 wavelength division multiplexer WDM; the other end of one 2*1 wavelength division multiplexer WDM is welded with the other end of the other 2*1 wavelength division multiplexer WDM, and the output end of the other 2*1 wavelength division multiplexer WDM is connected with the F-P interferometer; and the output end of the F-P interferometer is connected with the CCD display. The invention can flexibly change the free spectral range and achieve high measurement precision, simple experimental equipment and low price.

Description

technical field [0001] The invention relates to a measuring device for stimulated Brillouin frequency shift during single-frequency single-pulse amplification. Background technique [0002] High-power single-frequency pulse signal has the advantages of narrow linewidth and diffraction-limited beam quality, so it has been widely used in industry, medical, scientific research, military and other fields, and can be used for pumping of coherent beam combining and optical parametric oscillation source and high-precision interferometry, such as gravitational wave detection, but because its linewidth is generally in the order of KHZ ~ MHZ, which is much smaller than the gain bandwidth of stimulated Brillouin scattering (SBS) (generally in tens of MHZ), so that the backward SBS has become the main factor affecting the increase of the output power of single-frequency lasers and amplifiers. SBS will cause pulse waveform distortion, and in severe cases, it can permanently damage system...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J11/00
Inventor 常丽萍任宏亮温浩徐红刘恺郭淑琴覃亚丽
Owner ZHEJIANG UNIV OF TECH
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