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Middle-infrared wave band self-cascade optical parametric oscillation laser device

An optical parametric oscillation and optical parametric technology, applied in the field of optoelectronics, can solve problems such as difficulties in pulsed laser output, and achieve the effects of high effective nonlinear coefficient, compact structure, and high frequency conversion efficiency

Inactive Publication Date: 2014-10-01
WENZHOU UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the immaturity of Q-switching devices in the mid-infrared band, it is difficult to achieve high-peak pulsed laser output

Method used

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  • Middle-infrared wave band self-cascade optical parametric oscillation laser device
  • Middle-infrared wave band self-cascade optical parametric oscillation laser device
  • Middle-infrared wave band self-cascade optical parametric oscillation laser device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0018] Example: according to figure 1 A self-cascaded optical parametric oscillator laser in the mid-infrared band is produced for the output of mid-infrared band laser.

[0019] Neodymium ion-doped laser crystal 2 using Nd:YVO 4 ; The nonlinear optical crystal 5 adopts the potassium titanyl arsenate crystal cut according to the non-critical phase matching of θ90°, Φ=0°; The signal light wavelength of parametric oscillation (1.5 micron band) and the signal light wavelength of secondary parametric oscillation (2.6 micron band) are highly reflective, and the transmittance curve of the coating is as follows figure 2 . The dielectric film plated on the output cavity mirror 6 is highly reflective to the fundamental frequency laser (1.06 micron band) and the signal light wavelength (1.5 micron band) of the primary optical parametric oscillation, while the signal light wavelength (2.6 micron band) of the secondary parametric oscillation is transmitted through The ratio is about ...

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Abstract

The invention discloses a middle-infrared wave band self-cascade optical parametric oscillation laser device. A total-reflection endoscope, a laser crystal of a semiconductor laser end face / side pump, an acousto-optic Q-switch, a composite endoscope, a nonlinear optical crystal and an output endoscope are sequentially arranged in an optical path, wherein the total-reflection endoscope and the output endoscope form a base frequency cavity, the composite endoscope and the output endoscope form an optical parametric oscillation cavity, a dielectric film plated on the composite endoscope performs high-resolution transmission on the base frequency laser and meanwhile performs high-resolution transmission on optical wave length of primary and secondary optical parametric oscillation signals, a dielectric film plated on the output endoscope performs high-resolution transmission on the base frequency laser and primary signals, and meanwhile secondary optical parametric oscillation signal light partially penetrates the dielectric film. The middle-infrared wave band self-cascade optical parametric oscillation laser device has the advantages of being compact in structure, high in laser production efficiency and the like.

Description

technical field [0001] The invention belongs to the field of optoelectronics, and specifically refers to a laser device capable of realizing 2.6-micron mid-infrared band laser output, in particular to a mid-infrared band self-cascading optical parametric oscillation laser. Background technique [0002] Mid-infrared 2.5-3 micron laser has important application prospects in laser medical treatment, laser bioengineering, gas remote sensing detection and industrial pollution source monitoring. The strong laser in this band can also be used as the pumping source of the optical parametric oscillator in the mid-to-far infrared band to obtain laser output in a longer band, especially the mid-infrared laser with a special wavelength required in the photoelectric countermeasure system, especially for national defense military systems. important. [0003] In recent years, experts in different fields in the world have competed to carry out different methods to obtain laser light source...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/16H01S3/0941H01S3/117
Inventor 朱海永段延敏阮秀凯张耀举谈燕花
Owner WENZHOU UNIVERSITY
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