In-cavity pump light parameter oscillator with fiber laser as pumping source

An optical parametric oscillator, fiber laser technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of complex structure, low conversion efficiency, high oscillation threshold, and achieve improved power conversion efficiency, simple structure, The effect of lowering the oscillation threshold

Active Publication Date: 2017-06-09
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

[0005] Aiming at the defects of the prior art, the object of the present invention is to provide an intracavity pumped single-resonance optical parametric oscillator using

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  • In-cavity pump light parameter oscillator with fiber laser as pumping source
  • In-cavity pump light parameter oscillator with fiber laser as pumping source
  • In-cavity pump light parameter oscillator with fiber laser as pumping source

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[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0028] Such as Figure 4 As shown, in the present invention, the intracavity pumped single resonant optical parametric oscillator using a fiber laser as the pump source, the intracavity pumped single resonant optical parametric oscillator includes: the pump source of the fiber laser 1, the fiber grating reflection Mirror 2, single-mode gain fiber 3, beam combiner 4, collimating lens 5, polarizer 6, dichroic mirror 7, output coupling mirror 8, first curved mirror 9, nonlinear crystal 10, second curved mirror 11 and high Mirror 12, where,

[0029] Fiber grating mirror 2 provides high reflection...

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Abstract

The invention discloses an in-cavity pump light parameter oscillator with a fiber laser as a pumping source. A pumping source emits in-band laser which is absorbed by a single mode gain fiber, the laser enters the single mode gain fiber via a pump combiner to form population inversion, and laser oscillation is formed in a fiber laser resonant cavity. A non-linear crystal is arranged in the fiber laser resonant cavity, and the in-cavity oscillation laser passes through the non-linear crystal to generate OPO signal light and an OPO idle light. A resonant cavity of the OPO signal light is partially overlapped with the fiber laser resonant cavity, so that the OPO oscillator threshold can be effectively reduced and the power conversion efficiency is improved. The non-linear crystal is arranged between a pair of curved surface mirrors, and an output coupling mirror and a high reflection mirror are used to enhance the cavity length of the OPO signal cavity, so that the light spot area of the OPO signal and the pump light in the non-linear crystal is reduced, and the OPO oscillator threshold is further reduced. Therefore, the OPO oscillator threshold is effectively reduced, the OPO power conversion efficiency is improved, and the structure is simple.

Description

technical field [0001] The invention relates to the field of optical parametric oscillators, in particular to an intracavity pumped optical parametric oscillator with a fiber laser as a pumping source. Background technique [0002] The optical parametric oscillator (OPO) uses the second-order nonlinear effect to convert the incident laser light, called the pump light, into two outgoing laser lights with different frequencies, one of which has a higher frequency is called signal light, and the other has a lower frequency. Called the idler light, the frequency of the pump light is equal to the sum of the frequencies of the signal light and the idler light; the optical parametric oscillator is used to expand the output band of laser radiation and realize broadband tunable laser radiation. [0003] Continuous wave single-resonant optical parametric oscillators generally use fiber amplifiers as pump sources; longer period-polarized nonlinear crystals, such as periodically-polariz...

Claims

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Application Information

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IPC IPC(8): H01S3/094
CPCH01S3/094042
Inventor 张兆伟李野王国峰
Owner HUAZHONG UNIV OF SCI & TECH
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