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A laser cavity type for single frequency laser

A laser and laser cavity technology, applied in the field of laser cavity type, can solve the problems of light blocking, limiting single-frequency laser output power, inconvenience, etc., and achieve the effects of avoiding astigmatism, ensuring single-frequency laser output, and reducing the limit

Inactive Publication Date: 2011-12-07
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, the distance adjustment range from the plane mirror 2 to the crystal 8 is relatively small, and if the deflection angle on the plane mirror 2 is too small, the crystal will block light; if the deflection angle is too large, since the mirror 5 is a concave mirror, greater astigmatism will be introduced , which limits the output power of the single-frequency laser
[0006] 2) Due to the "8" shaped cavity, there is a laser intersection point, so when placing components in the cavity, it is easy to block the light due to the size of the component, which is very inconvenient

Method used

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  • A laser cavity type for single frequency laser
  • A laser cavity type for single frequency laser
  • A laser cavity type for single frequency laser

Examples

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Effect test

Embodiment 1

[0055] Example 1: see Figure 4 as shown, Figure 4 A schematic diagram of a laser cavity for a single-frequency laser. In the figure, 1 is the 808nm semiconductor laser output by 30W fiber coupling, 2 is the 808nm high-transparency and 1064nm high-reflection plane mirror at 45°, 3 is the output mirror with a transmittance of 20%, and 4 is the In the case of 45°, for the 1064nm high-reflection plane mirror, 5 is for the 1064nm high-reflection plane mirror at 45°, 6 is for the 1064nm high-transmission lens with a focal length of 100mm, 7 is for the 1064nm high-transmission, A lens with a focal length of 100mm, 8 is a laser crystal Nd:YVO 4 . Ring cavity Nd:YVO made of this new type of laser cavity4 Solid-state lasers can obtain single-frequency lasers with higher output power and better beam quality.

Embodiment 2

[0056] Example 2: see Figure 5 as shown, Figure 5 A schematic diagram of a laser cavity for a single-frequency laser. In the figure, 1 is the 808nm semiconductor laser output by 30W fiber coupling, 2 is the 808nm high-transparency and 1064nm high-reflection plane mirror at 45°, 3 is the output mirror with a transmittance of 20%, and 4 is the In the case of 45°, for the 1064nm high-reflection plane mirror, 5 is for the 1064nm high-reflection plane mirror at 45°, 6 is for the 1064nm high-transmission lens with a focal length of 100mm, 7 is for the 1064nm high-transmission, A lens with a focal length of 100mm, 8 is a laser crystal Nd:YAG, 9 is a Faraday rotator, 10 is a half-wave plate, 11 is a polarizer, and 12 is an acousto-optic Q switch. Using the ring cavity Nd:YAG solid-state laser made of this new type of laser cavity, a single-frequency pulse laser with higher output power and better beam quality can be obtained.

[0057] In summary, the present invention is a new ty...

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Abstract

The invention discloses a laser cavity type for a single-frequency laser, including: a pumping source used for optical fiber coupling output; in the case of 45°, a first pumping source with high transparency for pumping light and high reflection for oscillating light Plane mirror; the second plane mirror as the output mirror of the resonator; in the case of 45°, the third plane mirror with high reflection for the oscillating light; in the case of 45°, the fourth plane mirror with high reflection for the oscillating light; for the oscillating light A first lens with high transparency and a certain focal length; a second lens with high transparency and a certain focal length for oscillating light; and a laser crystal. With the invention, not only more components can be placed conveniently, but also the mode matching of the laser cavity can be easily realized by changing the focal length of the lens.

Description

technical field [0001] The invention relates to the technical field of semiconductor lasers, in particular to a laser cavity type for a single-frequency laser. Background technique [0002] The ring cavity is used to eliminate the space burning effect, so as to realize the single-frequency laser output. At present, there are generally two laser cavity types, one is a "mouth"-shaped cavity, and the other is an "8"-shaped cavity. [0003] Such as figure 1 as shown, figure 1 It is a schematic diagram of a traditional "口"-shaped laser cavity. In actual operation, because the traditional "口"-shaped cavity relies on the size of the crystal thermal lens to maintain the stability of the cavity, it is difficult to achieve pumping light and oscillation light. mode matching, which limits the output power of single-frequency lasers. [0004] Such as figure 2 as shown, figure 2 It is a schematic diagram of the traditional "8" shaped laser cavity. In actual operation, there are th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/05H01S3/106H01S3/06
Inventor 赵伟芳李晋闽林学春侯玮郭林李港熊波董智勇刘燕楠鄢歆
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI