Double-end-surface pumping optical parametric oscillator

An optical parametric oscillator and double-ended technology, which is applied to lasers, laser components, phonon exciters, etc., can solve the problems of increasing equipment costs, difficulty in adjustment, and low output power, so as to avoid energy waste and optimize Pump structure design, the effect of enhancing applicability

Active Publication Date: 2015-12-23
SHANGHAI PRECILASERS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Same as the single-end pumped laser oscillator, since the thermal stress produced by the thermal effect in the crystal cannot exceed the fracture stress of the nonlinear crystal, the pump power per unit area of ​​the nonlinear crystal cannot be very high, and finally The obtained output power is relatively small, so that the optical parametric oscillator is subject to certain restrictions in practical applications
Since the length of the nonlinear crystal is affected by the walk-off effect,

Method used

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  • Double-end-surface pumping optical parametric oscillator

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Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1 of the present invention such as figure 1 As shown, a double-port pumped optical parametric oscillator includes a laser pump source 1, focusing coupling systems A(5), B(13), nonlinear optical crystal 7, isolators A(3), B(17 ), half-wave plates A(4), B(14), C(15), D(16), 45-degree mirrors A(10), B(11), C(12), beam splitters 2 and resonator mirrors A (6), B (8), and C (9), which are characterized in that the laser pump source 1 is located in front of the half-wave plate A (4), and the beam splitter 2 is located in half After the wave plate A (4), the beam splitter 2 splits the pump light into two, where the isolator A (3) and the half wave plate B (14 ) and the focusing coupling system A (5), after the focusing coupling system A (5) a resonant cavity composed of resonant cavity mirrors A (6), B (8) and C (9) is placed, and the nonlinear optical crystal 7 is placed in the resonant In the cavity; in another optical path behind the beam splitter 2, place a 45-...

Embodiment 2

[0034] Embodiment 2 of the present invention such as figure 2 As shown, a double-port pumped optical parametric oscillator includes a laser pump source 1, focusing coupling systems A(5), B(13), nonlinear optical crystal 7, isolators A(3), B(17 ), half-wave plates B(14), C(15), D(16), 45-degree mirrors A(10), B(11), C(12), beam splitter 2 and cavity mirror A(6), B(8), C(9), are characterized in that the laser pump source 1 is located before the beam splitter 2, and the pump light is split into two after the beam splitter 2, wherein the beam splitter 2 is followed by a The isolator A (3), half-wave plate B (14) and focusing coupling system A (5) are placed sequentially along the optical path in the optical path, and the resonant cavity mirror A (6) is placed after the focusing coupling system A (5). , B (8), C (9) constitute the resonant cavity, the nonlinear optical crystal 7 is placed in the resonant cavity; in another optical path behind the beam splitter 2, place the 45-de...

Embodiment 3

[0043] Embodiment 3 of the present invention such as image 3 As shown, this embodiment is the same as Embodiment 1, the difference is that the resonant cavity of the optical parametric oscillator is a four-mirror folded cavity, which is composed of resonant cavity mirrors 6, 8, 9, 11, and the obtained parametric light is obtained from the resonant cavity mirror 9 output.

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Abstract

The invention, which belongs to the technical field of optical parametric oscillator, provides a double-end-surface pumping optical parametric oscillator comprising a laser pumping source and the like. The optical parametric oscillator is characterized in that a beam splitter is arranged in rear of the laser pumping source and splits pump light into two light paths; the two paths of light beams are transmitted into a resonant cavity through respective light paths front the front side and the rear side of the resonant cavity, thereby forming a double-end-surface pumping optical parametric oscillator. Generated parametric light is outputted from a light resonant cavity of an output terminal. According to the invention, with the dual-end pumping way, a problem that the laser pump power is limited due to a low crystal destruction threshold during the single-end pump process can be solved; and the heat effect of the optical parametric oscillator can be reduced. Moreover, on the basis of the reasonable design of the resonant cavity, the good cavity model matching is realized, thereby obtaining the high-power high-light-beam-quality optical parametric laser output.

Description

technical field [0001] The invention relates to an optical parametric oscillator (OPO), in particular to a double-end surface pumped optical parametric oscillator. technical background [0002] The optical parametric oscillator refers to placing a nonlinear crystal in a resonant cavity, and a beam of pump light ω 3 is incident into a nonlinear crystal, producing two new beams of light ω 1 and ω 2 , and satisfy ω 3 = ω 1 +ω 2 . The output of an optical parametric oscillator has high monochromaticity and directivity, and it is one of the important means to change coherent radiation with fixed frequency into tunable coherent radiation and extend the wavelength of laser output. Different from the output laser wavelength of the laser oscillator is determined by the corresponding atomic transition, the output wavelength of the optical parametric oscillator is determined by the spectrum, spatial distribution, and phase matching conditions of the pump light, which can be tuned...

Claims

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Application Information

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IPC IPC(8): H01S3/0915H01S3/081
Inventor 宁建张百涛侯佳王兆伟韩克祯王祎然何京良
Owner SHANGHAI PRECILASERS TECH CO LTD
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