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Array type intracavity frequency doubling laser and application thereof

An intra-cavity frequency doubling and laser technology, applied in the field of lasers, can solve the problems of complex decoherence processing and high cost, and achieve the effects of eliminating speckle effect, long life and high efficiency

Inactive Publication Date: 2015-01-14
SHANDONG UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another laser source is LD-pumped solid-state frequency-doubling laser. Red, green, and blue lasers can be generated in this way. The disadvantage is that the cost is higher than that of LD that emits light directly, and the decoherence processing is also more complicated than LD.
The third type of laser light source is the frequency doubling of infrared vertical surface-emitting semiconductor lasers, and the cost is also higher than that of direct light-emitting LDs, and the decoherence processing is also more complicated than LDs.
However, since there is no green LD at present, the solid-state frequency-doubled laser pumped by LD is a good choice for obtaining green light source

Method used

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  • Array type intracavity frequency doubling laser and application thereof

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Embodiment 1

[0024] Such as figure 1 shown.

[0025] An array type intracavity frequency-doubled laser, comprising a laser pump source 1, a solid laser medium 2, an etalon 3, a half-wave plate 4 and a nonlinear crystal 5 arranged in sequence along the laser emission direction;

[0026] The solid laser medium is Nd-doped yttrium lithium fluoride crystal, that is, Nd:YLF crystal 2, the length of the Nd:YLF crystal 2 in the x direction is 5 mm, the length in the y direction is 5 mm, and the length in the z direction is The thickness is 1 mm; the side of the Nd:YLF crystal 2 close to the laser pump source 1 is coated with: a high-transparency film for the light emitted by the pump source 1, and a high-reflection film for light with wavelengths of 1050 nm and 525 nm , the coating is used as the input mirror of the multi-beam shared resonator;

[0027] The nonlinear crystal is a periodically poled lithium niobate crystal, that is, a PPLN crystal 5. The length of the PPLN crystal 5 in the x dir...

Embodiment 2

[0033] An application of an arrayed intracavity frequency-doubled laser as described in Embodiment 1, used as a green light source for laser display: generating mixed green light with a wavelength of 524 nanometers and 526 nanometers, the number of 524 nanometer lasers and 526 nanometer lasers The ratio is 1:1.

Embodiment 3

[0035] A kind of array type intracavity frequency doubling laser as described in embodiment 1, the difference is that the number of the array type intracavity frequency doubling laser etalon and the number of half-wave plates are 0, and the array type intracavity frequency doubling laser The output wavelength of the laser is only 524 nm green light.

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Abstract

The invention relates to an array type intracavity frequency doubling laser. The array type intracavity frequency doubling laser comprises a laser pumping source, solid laser mediums, a standard tool, a half wave plate and a nonlinear crystal which are arranged in sequence in the laser outgoing direction. The array type intracavity frequency doubling laser is used for green light sources for laser display, single wavelength green light can be output, and double-wavelength mixed green light can also be output. The de-coherence processing difficulty can be reduced in a multi-beam incoherent synthesis processing mode; the laser is small in size, long in service life and low in price due to the experimental design of a shared resonant cavity.

Description

technical field [0001] The invention relates to an array type intracavity frequency doubling laser and its application, belonging to the technical field of lasers. Background technique [0002] Laser display has the advantages of wide color gamut (the color performance of laser display is more than twice that of flat-panel TV), long life, environmental protection, energy saving, etc., and has broad market prospects. The laser display technology route is divided into scanning type and projection type in terms of image generation methods, among which projection type laser display is in line with the development trend. The key technologies of laser display include: red, green and blue primary color laser light source, image modulation technology, shimming and decoherence technology, and information processing technology of large color gamut images. Among them, the red, green and blue primary color laser light source determines the color gamut space, lifespan and price of the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/106H01S3/109H01S3/05H01S3/0941
Inventor 张飒飒张行愚刘兆军刘杨丛振华门少杰夏金宝饶翰
Owner SHANDONG UNIV