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Royal purple laser device based on frequency doubling alkali metal steam lasers

An alkali metal vapor pool and alkali metal technology, applied in the field of blue-violet lasers, can solve the problems of low laser beam quality and low laser output power, and achieve the effect of high beam quality

Inactive Publication Date: 2013-04-10
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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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 blue-violet laser based on frequency-doubled alkali metal vapor laser

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  • Royal purple laser device based on frequency doubling alkali metal steam lasers
  • Royal purple laser device based on frequency doubling alkali metal steam lasers

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specific Embodiment approach 1

[0025] Specific implementation mode one, such as figure 1 As shown, it is the first technical solution of a blue-violet laser based on a frequency-doubled alkali metal vapor laser of the present invention. This technical solution uses a flat-concave stable cavity to obtain a continuous output blue-violet laser by means of intracavity frequency doubling. , the blue-violet laser includes a pump light source structure, an alkali metal vapor pool 6, a frequency doubling crystal 7 and a resonant cavity.

[0026] 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.

[0027] The pump light emitted by the LD pump source 1 in this embodiment enters the coupling lens group through the transmission fiber 2 or other means.

[0028] The coupling lens group in this embodiment is composed of the first lens 3 and the second lens 4, and is used for coupling and focusing the pu...

specific Embodiment approach 2

[0036] Specific implementation mode two, such as figure 2 As shown, it is a second technical solution of a blue-violet laser based on a frequency-doubled alkali metal vapor laser of the present invention, which is a parallel technical solution with the first technical solution described in Embodiment 1. This technical solution adopts The Z-shaped folded cavity obtains continuous output blue-violet laser through frequency doubling in the cavity. The blue-violet laser includes: two sets of pump light source structures, two alkali metal vapor pools 6, frequency doubling crystal 7 and a resonant cavity.

[0037] 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 fiber 2 for transmitting pump light, and a coupling for focusing pump light. The coupling lens group of the pump light, and the Z-shaped folded cavity is located between t...

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Abstract

The invention discloses a royal purple laser device based on frequency doubling alkali metal steam lasers, relates to the technical field of novel laser devices, and solves the problems that an existing solid laser device is low in laser output power and poor in laser beam quality. The royal purple laser device comprises a pump light source structure, an alkali metal steam pool, a resonant cavity and a frequency doubling crystal, wherein the pump light source structure is located outside the resonant cavity, the alkali metal steam pool and the frequency doubling crystal are located in the resonant cavity, and the frequency doubling crystal is placed at a beam waist position of a fundamental frequency light oscillation mold between a front endoscope and an output mirror. Pump light emitted by a laser diode (LD) pump source is output to a coupling lens group through a transmission optical fiber, undergoes coupling focusing and then enters the alkali metal steam pool; under the incentive function of a pump, effective population inversion of alkali metal atoms is realized; fundamental frequency oscillation light is formed in the resonant cavity through feedback of the resonant cavity; and the fundamental frequency oscillation light generates a nonlinear effect in the frequency doubling crystal, is converted into royal purple frequency doubling light and is output through the output mirror. The royal purple laser device has high laser output power and laser beam quality.

Description

technical field [0001] The invention relates to the technical field of novel lasers, in particular to a blue-violet laser based on a frequency-doubled alkali metal vapor laser. 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/0941H01S3/109H01S3/139
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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