High-repetition frequency blue violet laser

A high repetition rate laser technology, applied in the field of high repetition rate blue-violet lasers, can solve the problems of low laser output power and low laser beam quality, and achieve high power density, high frequency doubling conversion efficiency, and convenient installation and adjustment.

Inactive Publication Date: 2013-04-24
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the existing Nd-doped pumping based on frequency doubling LD 3+ The quasi-three-level laser solid-state laser has the problems of low laser output power and low laser beam quality. The invention provides a high-efficiency, high-power high repetition rate blue-violet laser

Method used

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  • High-repetition frequency blue violet laser
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  • High-repetition frequency blue violet laser

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specific Embodiment approach 1

[0027] Specific implementation mode one, such as figure 1 As shown, it is the first technical solution of a high repetition rate blue-violet laser of the present invention, which is to use an alkali metal vapor laser based on acousto-optic Q-switching as a fundamental frequency light source, through a plano-convex unstable cavity extracavity two-way The blue-violet laser with high repetition rate output is obtained by frequency doubling. The blue-violet laser includes a pump light source structure, an alkali metal vapor pool 7, a resonant cavity, a first aperture 8, an acousto-optic Q switch 9, and a second aperture 11. Convex lens 12, first reflector 13, second reflector 15 and frequency doubling crystal 14.

[0028] The structure of the pump light source in this embodiment consists of an LD pump source 1 , a transmission fiber 2 for transmitting pump light, and a coupling lens group.

[0029] The pump light emitted by the LD pump source 1 in this embodiment is linearly pola...

specific Embodiment approach 2

[0042] Specific implementation mode two, such as figure 2 shown in figure 1 On the basis of the first technical solution shown, an alkali metal vapor pool 7, a polarizer 6 and a group of pump light source structures are added between the above-mentioned acousto-optic Q switch 9 and the output mirror 10, and the alkali metal vapor pool 7 is close to The acousto-optic Q switch 9 is placed, the pump light source structure is placed close to the output mirror 10, and the output power of the alkali metal laser is increased by increasing the gain volume and increasing the injected pump power of the LD. The function realized by the violet laser is the same as that in the first embodiment.

[0043] The functions and compositions of the polarizer 6 , the alkali metal vapor pool 7 and the structure of the pumping light source in this embodiment are all the same as those mentioned in the first technical solution.

[0044] A third aperture 16 is placed between the acousto-optic Q switc...

specific Embodiment approach 3

[0046] Specific implementation mode three, such as image 3 As shown, it is the second technical solution of a high repetition rate blue-violet laser according to the present invention, which is parallel to the first technical solution described in the first specific embodiment. This technical solution adopts a Z-shaped folded cavity, The alkali metal vapor laser based on acousto-optic Q-switching is used as the fundamental frequency light source, and the blue-violet laser with high repetition rate output is obtained through the Z-shaped folded intracavity frequency doubling method. The blue-violet laser includes: two sets of pump light sources structure, two alkali metal vapor pools 7, a resonant cavity, an acousto-optic Q switch 9 and a frequency doubling crystal 11;

[0047] The pump light source structure in this embodiment is divided into two groups, and each group of pump light source structures includes an LD pump source 1 for emitting pump light, a transmission optical...

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Abstract

The invention provides a high-repetition frequency blue violet laser, relates to the technical field of novel lasers, and solves the problems that an existing solid laser is low in laser output power and laser optical quality. The blue violet laser comprises a laser diode (LD) pumping source, a transmission optical fiber, a coupling lens assembly, an alkali metal vapor pond, a resonant cavity, an acousto-optic Q-switch, a convex lens, a first reflector, a second reflector and a frequency doubling crystal. The LD pumping source emits pump light, the transmission optical fiber conveys the pump light into the coupling lens assembly for coupling focus, then the pump light enters the alkali metal vapor pond, alkali metal atoms can carry out effectively population inversion, and then pulse fundamental frequency light can be generated through modulation of the acousto-optic Q-switch and feedback effect of the resonant cavity. The pulse fundamental frequency light is output through an output mirror, focused by the convex lens and then reflected by the first reflector to enter the frequency doubling crystal, the pulse fundamental frequency light is partially conversed into blue violet frequency doubling light, and then the blue violet frequency doubling light is reflected by the second reflector, enters the frequency doubling crystal and is output through the first reflector. The high-repetition frequency blue violet laser is high in laser output power and laser optical quality.

Description

technical field [0001] The invention relates to the technical field of novel lasers, in particular to a blue-violet laser with a high repetition rate. Background technique [0002] Blue-violet laser sources play a very important role in a series of basic research, high-tech product development and national defense projects such as laser spectroscopy, atomic physics, laser medical treatment, environmental monitoring, laser display, and laser underwater communication and detection. [0003] At present, the blue-violet laser light source mostly adopts the diode laser (Laser Diode, LD) pumped solid state laser (Diode Pumped Solid State Lasers, DPSSL) structure, which is based on the Nd doped 3+ Quasi-three-level laser (0.9 μm) method to achieve. However, the solid-state laser using this method has the following problems: First, the Nd-doped 3+ The stimulated emission cross-section of the quasi-three-level laser is relatively small, and there is a gain competition with the four...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/227H01S3/0941H01S3/081H01S3/109H01S3/117
Inventor 陈飞高飞李殿军谢冀江杨贵龙张来明郭劲
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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