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Optical fiber coupling semiconductor laser output light band indicating device

A technology of fiber coupling and indicating device, which is applied to the structural details of semiconductor lasers and the structure of the active area, etc., can solve problems such as failure, affecting coupling efficiency, and failure of laser indicating light.

Inactive Publication Date: 2011-06-01
Shandong Huaguang Optoelectronics Co. Ltd.
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method is to spatially couple a beam of visible light (usually 650nm red light) when the infrared semiconductor laser enters the optical fiber. In this case, it is necessary to complete the coupling of infrared light and red light during the coupling process, which will inevitably affect the coupling efficiency.
And because the average service life of visible light semiconductor lasers is less than that of infrared semiconductor lasers, it is difficult to replace, so the entire laser often fails as a whole due to the failure of the indicator light

Method used

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  • Optical fiber coupling semiconductor laser output light band indicating device
  • Optical fiber coupling semiconductor laser output light band indicating device

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Embodiment Construction

[0012] As shown in the drawings, the output light band indicating device of the fiber-coupled semiconductor laser of the present invention includes a gain medium 1 , a frequency doubling crystal 2 , a fixing member 3 and a fixing sleeve 9 . The gain medium 1 adopts Nd:YVO4, Nd:YAG and other crystals, and the light incident surface 4 of the gain medium is vapor-deposited with 808nm anti-reflection film, 1064nm (or 946nm) high-reflection film and 532nm (or 473nm) high-reflection film three-layer coating; gain 808nm anti-reflection coating, 1064nm (or 946nm) anti-reflection coating and 532nm (or 473nm) high-reflection coating are deposited on the light exit surface 5 of the medium. Frequency doubling crystal 2 adopts KDP crystal, 808nm antireflection coating, 1064nm (or 946nm) antireflection coating and 532nm (or 473nm) high reflection coating are evaporated on light incident surface 6 of frequency doubling crystal, and light exit surface 7 of frequency doubling crystal is evapora...

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Abstract

The invention discloses an optical fiber coupling semiconductor laser output light band indicating device. The device comprises a gain medium, a frequency doubling crystal, a fixing piece and a fixing sleeve, wherein both the gain medium and the frequency doubling crystal are arranged in inner holes of the fixing piece; and the fixing piece is inserted into an inner hole of the fixing sleeve. The device reduces a visible light semiconductor laser and a corresponding power supply thereof, so that an optical fiber coupling semiconductor laser output light band is indicated by visible light generated by an infrared laser under the action of a crystal; the service life of the device is consistent with an overall laser; moreover, if a problem appears, the crystal can be replaced at any time conveniently and rapidly.

Description

technical field [0001] The invention relates to a device for indicating the output light band of a fiber-coupled semiconductor laser, and belongs to the technical field of the output light band indication of the semiconductor laser. Background technique [0002] Semiconductor lasers have the advantages of small size, light weight, high efficiency, long life, easy modulation and low price, and have been widely used in industry, medicine and military fields. The fiber-coupled output laser has many advantages, such as flexible use, sealed use of the laser, guarantee of the working environment of the laser, and excellent output spot mode. Some special-purpose infrared semiconductor fiber output lasers need visible light for indication, especially for medical equipment and industrial manufacturing, etc., all need visible light as indication. The traditional method is to spatially couple a beam of visible light (generally 650nm red light) when the infrared semiconductor laser ent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/02H01S5/30
Inventor 于果蕾孟秋真汤庆敏徐现刚李沛旭
Owner Shandong Huaguang Optoelectronics Co. Ltd.
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