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2 [mu] m laser diode pumped all-solid-state Tm, Ho: LLF laser

A laser diode and all-solid-state technology, which is applied in the direction of lasers, laser components, laser components, etc., can solve the problems of low output energy of lasers, failure to meet laser standards, cutting or ranging requirements, etc.

Pending Publication Date: 2021-03-19
BAOJI UNIV OF ARTS & SCI +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The output energy of this kind of laser is generally small, and it is only suitable for occasions such as laser communication and laser surgery that require continuous laser operation, and cannot meet the requirements of laser compliance, cutting or distance measurement that require large output energy.

Method used

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  • 2 [mu] m laser diode pumped all-solid-state Tm, Ho: LLF laser
  • 2 [mu] m laser diode pumped all-solid-state Tm, Ho: LLF laser
  • 2 [mu] m laser diode pumped all-solid-state Tm, Ho: LLF laser

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Embodiment Construction

[0025] Such as figure 1 As shown, the all-solid-state Tm,Ho:LLF laser pumped by the 2μm laser diode of the present invention includes a pump source 1, a gain medium 5, a focusing system 2 and a resonant cavity.

[0026] Pumping source 1 is 790nmLD. The gain medium 5 adopts a Tm, Ho:LLF crystal whose size is 3mm*3*mm*8mm, and its Tm 3+ The concentration is 5%, Ho 3+ Concentration is 0.5% and cut along its Brewster's angle. During the operation of the present invention, the gain medium 5 needs to be cooled. The method is to wrap the gain medium 5 with aluminum foil and tightly install it in a water-cooled copper block. The temperature of the cooling water is maintained at 11°C. Through the ABCD matrix simulation, the spot sizes on the gain medium 5 and the saturable absorber are obtained to be 188 μm and 97 μm, respectively.

[0027] The focusing system 2 is arranged between the pump source 1 and the gain medium 5 and is used for focusing the divergent light emitted by the p...

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Abstract

The invention relates to the technical field of laser, in particular to a 2 [mu] m laser diode pumped all-solid-state Tm, Ho: LLF laser. The laser comprises a pumping source, a gain medium, a focusingsystem and a resonant cavity, The pumping source is a 790nm LD, the gain medium is a Tm, Ho: LLF crystal, and the focusing system is arranged between the pumping source and the gain medium and is used for focusing divergent light emitted by the pumping source on the gain medium; and the resonant cavity is X-shaped and is provided with a first plano-concave mirror, a second plano-concave mirror, athird plano-concave mirror, a planar high-reflectivity mirror and a planar pumping mirror. The laser has large output energy and is suitable for laser standard reaching, cutting, distance measuring and the like.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to an all-solid-state Tm, Ho:LLF laser pumped by a 2 μm laser diode. Background technique [0002] As early as 1962, Keyes and others in the United States used laser diodes (Laser Diode, LD for short) as the pump source of solid-state lasers to achieve continuous laser output. It is a pity that the output power of LD was small at that time, and its lifespan was short, so it was not widely used. Until the mid-1980s, LD-pumped solid-state lasers developed rapidly because of their more stable performance than traditional pump sources (dye, gas, and flash lamp lasers) in industrial, military, and scientific applications. The specific advantage of LD is that its pumping wavelength can correspond to the absorption peak of the medium, it has high quantum effect and electro-optical conversion efficiency, long continuous working time, compact structure, low cost and good beam quality. There...

Claims

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Application Information

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IPC IPC(8): H01S3/0941H01S3/098H01S3/08H01S3/16H01S3/04
CPCH01S3/0407H01S3/08H01S3/0941H01S3/1115H01S3/163
Inventor 许强令维军陈晨杜海卫孙锐江鹏张瑞曹雷
Owner BAOJI UNIV OF ARTS & SCI
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