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260nm ultraviolet laser emitting device

A technology of transmitting device and ultraviolet laser, which is applied to devices controlling the output parameters of lasers, lasers, phonon exciters, etc., can solve the problems of small optical gain, narrow light source communication frequency band, and low information capacity, etc.

Pending Publication Date: 2020-08-18
HAINAN NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Generally, the light sources used in solar-blind ultraviolet communication are traditional low-pressure mercury lamps, ultraviolet LEDs or fluorescent tubes. These traditional light sources have narrow communication frequency bands, low information capacity, small optical gain, and large beam divergence angles.

Method used

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  • 260nm ultraviolet laser emitting device

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Embodiment Construction

[0011] Combine below figure 1 The present invention is further described in detail.

[0012] The invention discloses a 260nm ultraviolet laser emitting device, which comprises a 1-520nm semiconductor laser, a 2-520nm focusing mirror, a 3-CLBO frequency doubling crystal and a 4-volume grating.

[0013] Converge the 520nm laser output from the 1-520nm semiconductor laser into the 3-CLBO frequency doubling crystal through the 2-520nm focusing lens. The front and rear surfaces of the 2-520nm focusing mirror are coated with 112nm TiO 2 / 62nm SiO2 2 / 97nm TiO 2 / 60nm SiO2 2 Optical film, the role of optical film is to increase the transmittance at 520nm wavelength and reduce the loss of 520nm semiconductor laser power.

[0014] The 520nm laser is frequency-doubled by a 3-CLBO frequency-doubling crystal, and the 520nm laser is frequency-doubled by a 3-CLBO frequency-doubling crystal to produce two wavelength lasers.

[0015] The first wavelength laser is the 260nm laser generat...

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Abstract

The invention discloses a 260nm ultraviolet laser emitting device. The device comprises: a 520 nm semiconductor laser; a 520 nm focusing mirror, wherein the front surface and the rear surface of the 520 nm focusing mirror are plated with optical films of 112 nm T / 62 nm S / 97 nm T / 60 nm S; CLBO frequency doubling crystal, wherein the front surface of the CLBO frequency doubling crystal is plated with optical films of 28nm H / 41nm S / 39nm H / 47nm S / 28nm H / 41nm S / 39nm H / 47nm S / 28nm, and the rear surface of the CLBO frequency doubling crystal is plated with optical films of 76nm H / 24nm S / 39nm H / 44nm S; and a volume grating, wherein the front surface of the volume grating is plated with 74nm H / 96nm S / 62nm H / 94nm S / 64nm H / 88nm S / 69nm H / 83nm S / 73nm, and the rear surface of the volume grating is plated with optical films of 77nm H / 19nm S / 41nm H / 45nm S. According to the device, 260nm ultraviolet laser emission is realized. (In the formula, T-TiO2, S-SiO2 and H-HfO2 are used for injection).

Description

technical field [0001] The invention relates to the technical field of all solid-state lasers, in particular to a 260nm ultraviolet laser emitting device. Background technique [0002] Due to the absorption of the ozone layer, ultraviolet light with a wavelength of 200-280nm hardly exists on the earth's surface, which is usually called "solar blind area". The communication system working in this area is called solar blind ultraviolet communication. Compared with wireless communication, infrared communication, and laser communication, solar-blind ultraviolet communication is favored by researchers and widely used because of its advantages of high accuracy, good confidentiality, and no environmental interference. Solar-blind ultraviolet communication is a low-speed communication system. Ultraviolet communication requires the transmission of a large amount of information in a short period of time, and sometimes requires the transmission of high-volume video and image informatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/06H01S5/0687H01S5/12
CPCH01S5/0605H01S5/0687H01S5/1231
Inventor 李再金李林曲轶乔忠良赵志斌曾丽娜彭鸿雁
Owner HAINAN NORMAL UNIV