Cavity pump light parameter oscillator of single-ended output

An optical parametric oscillator, single-ended output technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of low output power, low utilization rate of mid-infrared idler double-ended output, etc. The effect of power conversion efficiency, improving output utilization rate, and simple structure

Active Publication Date: 2017-07-28
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a single-ended output intracavity pumped optical parametric oscillator, the purpose of which is to solve the mid-infrared idleness of the intracavity pumped optical parametric oscillator in the prior art. The problem of low frequency optical dual-terminal output utilization and low output power

Method used

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  • Cavity pump light parameter oscillator of single-ended output
  • Cavity pump light parameter oscillator of single-ended output

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Embodiment 1

[0029] The structure of the intracavity pumped optical parametric oscillator with single-ended output provided by Embodiment 1 is as follows figure 1As shown, it includes laser pumping source 1, focusing lens 2, input coupling mirror 3, laser gain crystal 4, dichroic mirror 5, nonlinear crystal 7, first curved mirror 8, and the nonlinear crystal 7 arranged in sequence. The piezoelectric ceramic 6 on the top, and the second curved mirror 9 arranged on the reflection optical path of the dichroic mirror 5; wherein, the input coupling mirror 3, the laser gain crystal 4, the dichromatic mirror 5, the nonlinear crystal 7 and the first curved mirror 8 Constitute the laser resonator;

[0030] Wherein, the focusing lens 2 focuses the laser pumping light emitted by the laser pumping source 1, the input coupling mirror 3 couples the outgoing light of the focusing lens 2, and the laser gain crystal 4 provides gain for the outgoing light of the input coupling mirror 3, OPO pumping light i...

Embodiment 2

[0038] The structure of the intracavity pumped optical parametric oscillator with single-ended output provided by Embodiment 2 is as follows figure 2 Illustrated; Compared with Embodiment 1, the difference is that a Q-switching device 10 is added; the Q-switching device 10 is arranged on the optical path between the laser gain crystal 4 and the dichroic mirror 5; it is used to change the loss of the laser resonator, and then Change the oscillation threshold of the resonant cavity to realize the parametric oscillation of Q-switching, so that the first curved surface mirror outputs the mid-infrared idler light in the pulse form; compared with the continuous wave mid-infrared laser output in embodiment 1, the mid-infrared laser output in embodiment 2 The laser is in the form of pulses and can be used in fields such as gas detection.

[0039] In the above embodiments, the nonlinear crystal 7 may also be a periodically poled lithium tantalate crystal (PPLT) or a periodic potassium...

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Abstract

The invention discloses a cavity pump light parameter oscillator of single-ended output. The oscillator comprises a laser pump source, a focusing lens, an input coupling mirror, a laser gain crystal, a diachronic mirror, a non-linear crystal, a first curved surface mirror, piezoelectric ceramic arranged on the non-linear crystal and a second curved surface mirror arranged on a reflected light path of the diachronic mirror. The input coupling mirror, the laser gain crystal, the diachronic mirror, the non-linear crystal and the first curved surface mirror form a laser resonant cavity. The first curved surface mirror, the non-linear crystal, the diachronic mirror and the second curved surface mirror form a signal light resonant cavity. The pump source carries out pumping via the focusing lens, population inversion is formed in a gain medium, laser oscillation is formed in the laser resonant cavity, and an oscillated laser generates signal light and forward and backward idle light via the non-linear crystal. Backward idle light is reflected by the second curved surface mirror and then is coupled and output with forward idle light generated by the non-linear crystal via the first curved surface mirror so as to realize single-ended output of intermediate infrared idle light.

Description

technical field [0001] The invention belongs to the technical field of optical parametric oscillators, and more specifically relates to an intracavity pumped optical parametric oscillator with single-end output. Background technique [0002] The Optical Parametric Oscillator (OPO) uses the second-order nonlinear effect to convert the incident laser light (called pump light) into two outgoing laser light with different frequencies, one of which has a higher frequency is called signal light, and the other is called signal light. The one with a lower frequency is called the idler light, and the frequency of the pump light is equal to the sum of the frequencies of the signal light and the idler light; OPO is used to expand the output band of laser radiation and realize broadband tunable laser radiation. [0003] In the optical parametric oscillator pumped in the cavity, the nonlinear crystal is placed in the resonant cavity of the pump laser; the high power density in the resona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/094H01S3/108
Inventor 张兆伟王国峰
Owner HUAZHONG UNIV OF SCI & TECH
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