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Intermediate infrared single-frequency optical parametric oscillator

A technology of parametric oscillator and infrared light, which is applied in the field of mid-infrared laser, can solve the problems of high production cost, high technical difficulty, and the degree of marketization is far less than that of the 1.5μm band, and achieves a simple optical path, avoids additional loss, and is conducive to stability Effects of Oscillation and Seeding

Active Publication Date: 2015-07-15
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

Seed injection technology can reduce the threshold and narrow the line width, but the 3μm laser is technically difficult and expensive to manufacture, and its marketability is far less than that of the 1.5μm laser, and the coating technology and related optical devices are far less popular than the near-infrared band.

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  • Intermediate infrared 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 scope of the present invention should not be limited thereto.

[0029] figure 1 It is a structural schematic diagram of an embodiment of a mid-infrared single-frequency optical parametric oscillator of the present invention. As can be seen from the figure, the mid-infrared optical parametric oscillator of the present invention includes: pump laser 1, focusing lens 2, half-wave plate 3, polarizer 4, plano-concave partial reflection mirror 5, PPLN crystal 6, plano-concave total reflection mirror 7. Piezoelectric ceramics 8, planar coupling mirror 9, planar mirror 10, DFB seed laser 11, collimating lens 12, isolator 13, focusing lens 14, crystal temperature control furnace 15, the positional relationship of the above components is as follows:

[0030] The propagation direction along the pump optical path is: pump laser 1, focusing lens 2, half-wave ...

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Abstract

The invention discloses an intermediate infrared single-frequency optical parametric oscillator. The intermediate infrared single-frequency optical parametric oscillator comprises a pumping laser, a focusing lens, a half-wave plate, a polarizer, a plano-concave partial reflection mirror, a PPLN crystal, a plano-concave total reflection mirror, a piezoelectric ceramic, a planar coupling mirror, a planar reflecting mirror, a DFB seed laser, an collimation lens, an isolator, a focusing lens and a crystal temperature controlling furnace. According to the intermediate infrared single-frequency optical parametric oscillator, through the addition of a seed laser of 1.57 micrometers, optical parametric oscillation of 3.3 micrometers is realized; the intermediate infrared single-frequency optical parametric oscillator can be applied to the fields of medical diagnosis, light spectrum resolution, military detection, and the like, and has the characteristics of being high in conversion efficiency, high in single-frequency performance, and tunable.

Description

technical field [0001] The invention relates to a mid-infrared laser, in particular to a mid-infrared single-frequency optical parametric oscillator, which realizes narrow line width output through seed injection, and realizes wavelength tuning through temperature tuning. It is suitable for research on mid-infrared laser technology, and its applications include environmental monitoring, photoelectric countermeasures, laser medical treatment, spectral analysis, and lidar. Background technique [0002] Many gas molecules (such as CH 4 , CO, NH 3 etc.) There is a strong absorption peak in the 3-5μm band, and the intensity is 2-3 orders of magnitude higher than that in the near-infrared band. The field has broad application prospects, and can also be widely used in the fields of laser radar, military detective, spectral analysis and medical detection. [0003] Optical parametric oscillator (hereinafter referred to as OPO) is a device that generates tunable mid-infrared laser....

Claims

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Application Information

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IPC IPC(8): H01S3/10H01S3/083
Inventor 马秀华朱小磊姜佳欣李世光
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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