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Seed injection single frequency optical parametric oscillator

An optical parametric oscillator and seed technology, used in lasers, phonon exciters, laser components, etc., can solve the problem of lack of real-time performance and anti-interference ability of resonance detection scheme, difficulty in ensuring synchronization, and poor anti-interference ability, etc. problem, to achieve the effect of high frequency stability single frequency pulse output, compact structure, strong anti-interference ability

Active Publication Date: 2014-08-13
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heterodyne method can guarantee the output of single longitudinal mode, but it has high requirements on the device, complex structure, and the length of the resonant cavity is adjusted after each light output, and the anti-interference performance is relatively poor
The sinusoidal scanning detection scheme does not require high-speed scanning and high-speed signal processing, which reduces the requirements for control circuit components, but its essence is still to adjust the cavity length after outputting the pulsed laser, and does not have the real-time performance and anti-interference of the resonance detection scheme. ability
The frequency stability obtained by using the resonant detection scheme is the highest, but it is necessary to turn on the pump light at the maximum value of the interference signal, which is limited by the electronic device itself, and it is difficult to ensure synchronization

Method used

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  • Seed injection single frequency optical parametric oscillator
  • Seed injection single frequency optical parametric oscillator
  • Seed injection single frequency optical parametric oscillator

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0029] see first figure 1 , figure 1 It is a structural block diagram of the seed injection single-frequency pulse laser of the present invention. It can be seen that the seed injection single-frequency optical parametric oscillator of the present invention has a structure including an extracavity seed light source 1, an integrated driven resonant cavity 2, and an electrical control processing part 3 And the single-frequency pump source 4 four parts:

[0030] The extracavity seed light source 1 includes a seed laser 1-1, along the laser output direction of the seed laser 1-1, there are coupling lens 1-2, isolator groups 1-3, 1-4, and half-wave plates 1-5 in sequence , the first reflector 1-6 and the dichroic mirror 1-7 that form a 45° angle with the optical path;

[0031...

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Abstract

The invention provides a seed injection single frequency optical parametric oscillator which comprises an extra-cavity seed light source, an integrated driven resonant cavity, an electric control processing part and a single frequency pumping source. The seed injection single frequency optical parametric oscillator has the characteristics of compact structure, narrow linewidth, high optical quality and high frequency stability, is strong in capacity of resisting external disturbance, and can be applied to complex environments such as onboard or satellite-borne experimental platforms.

Description

technical field [0001] The invention relates to a single-frequency laser, in particular to a seed injection single-frequency optical parametric oscillator. Background technique [0002] Airborne and spaceborne radar systems are used to measure the earth's surface topography, water vapor, CO 2 Distribution and O 3 A very efficient means of distribution. The most basic and most important part of the lidar system is the laser light source, so the invention of a reliable single-frequency laser is of great significance for earth science research. [0003] The frequency stability of the single-frequency pulsed optical parametric oscillators reported so far is not high. How to improve the frequency stability of the laser while achieving a single-frequency output has always been a research hotspot for lasers used in lidar. For the seed-injected single-frequency pulse optical parametric oscillator, the methods to realize cavity length control mainly include: heterodyne scheme, sin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/105H01S3/108
Inventor 陈卫标李世光马秀华朱小磊李环环臧华国刘继桥
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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