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Direct frequency multiplication device of semiconductor laser

A laser and semiconductor technology, applied in the field of laser applications, can solve the problems of frequency doubling light, poor beam quality, large divergence angle, etc., achieve high frequency doubling efficiency, simple internal mechanism, and improve brightness

Inactive Publication Date: 2016-02-24
INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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  • Abstract
  • Description
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Problems solved by technology

Due to the characteristics of high-power semiconductor lasers, such as linear luminous aperture of 10mm×1um (conventional CM-Bar), large divergence angle, and poor beam quality, it is difficult to obtain its frequency-doubled light

Method used

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  • Direct frequency multiplication device of semiconductor laser

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Embodiment Construction

[0021] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0022] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0023] Such as figure 1 As shown, the beam output by the semiconductor laser is collimated by the first collimating mirror and the second collimating mirror, and under the action of the space transformation lens, the sub-beams of the beam combining unit at different positions along the slow axis direction are converted into different inclination angles and converge The sub-beams of the grating are incident on the grating, and the dispersion e...

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Abstract

The invention provides a direct frequency multiplication device of a semiconductor laser. According to the scheme, laser beams emitted out by the semiconductor laser pass through a spectrum beam combining and narrowing mechanism, an isolator, a coupling lens, a TEC temperature control module, a non-linear frequency multiplication crystal and a second coupling outgoing mirror in sequence and then is output. By adopting the scheme, locked narrowing and mode selection of the length of each beam combining unit are realized, and the laser beams in a space near field and a far field, which are emitted by a light emitting unit, are superposed to form one beam for output, so that the quality of the light beam after the beam combination is greatly improved, the output high in light beam quality is realized under a high power output condition, and the corresponding locked spectrum is high in spectrum brightness.

Description

technical field [0001] The invention relates to the field of laser application technology, in particular to a semiconductor laser direct frequency doubling device. Background technique [0002] With the development of laser technology, lasers are used in many fields, such as biomedicine, laser aiming, laser communication, etc. For example, the blue laser system can be used together with the red semiconductor laser and the internal cavity frequency-doubling all-solid-state green laser as an all-solid-state standard three-primary color light source for color display in laser display; because the wavelength is shorter, the focal point is smaller after being focused by the lens. In high-density optical storage, using violet light for lithography, the capacity of DVD discs of the same size is more than 40 times that of ordinary CD discs, and 6-7 times that of ordinary household DVD discs. [0003] At present, it is more common to use semiconductor lasers as pumping sources. By p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/0941H01S3/109
CPCH01S3/0941H01S3/109
Inventor 孟慧成阮旭谭昊杜维川余俊宏王昭吴华玲高松信武德勇
Owner INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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