Full-solid-state single-spectral-line narrow linewidth yellow light laser

An all-solid-state, narrow-linewidth technology, applied in the direction of lasers, laser components, phonon exciters, etc., can solve the problems of unstable laser spectral output, aggravated mutual coupling, and poor power stability, so as to improve the light-to-light conversion efficiency , Small size, low cost effect

Inactive Publication Date: 2014-07-23
CHANGCHUN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the way they adopt has the following shortcomings: First, the laser spectrum output is unstable (Nd: YAG Lasers Operated at 1.1um and Intracavity Frequency-doubling, "Journal of Optoelectronics Laser", Vol.16, 2005, 788- 792), while outputting 561nm laser, it is easy to produce 556nm and 558nm laser output
The second is that the spectral line width of the 561nm single spectral line output is wide, which intensifies the mutual coupling between different longitudinal modes, resulting in poor power stability (All-solid-state continuous-wave yellow laser at561 nm under in-band pumping, " Opt.Soc.Am.B", Vol.30, 2013, 95-98), which limits the application in many aspects

Method used

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  • Full-solid-state single-spectral-line narrow linewidth yellow light laser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] see figure 1 As shown, an all-solid-state single-spectrum narrow-linewidth yellow laser includes a pump source system 8, and the pump source system 8 mainly includes a laser diode LD1 arranged in sequence on an optical path and a focusing coupling lens In system 2, the working mode of the pump source system 8 is continuous working mode, the maximum continuous pumping power is 5W, and the output wavelength is 808nm.

[0021] It also includes a straight resonant cavity device 9, the straight resonant cavity device 9 includes a laser gain medium 3 and a yellow light output mirror 6 sequentially arranged in the straight cavity, and the laser gain medium 3 and the yellow light output mirror 6 A frequency doubling crystal 4 is placed between them, and a birefringent filter 5 is placed between the frequency doubling crystal 4 and the yellow light output mirror 6 .

[0022] Further, the laser diode LD1 , the laser gain medium 3 and the frequency doubling crystal 4 have coo...

Embodiment 2

[0029] Roughly the same as Example 1, the differences are as follows:

[0030] (1) The birefringent filter 5 selects quartz crystal, puts it into the resonant cavity at Brewster's angle (56°), and adjusts its tuning angle to 46.6°.

[0031] (2) Frequency doubling crystal 4 is a lithium triborate (LBO) crystal with a size of 2×2×10mm 3 , both ends of the crystal are coated with 558nm and 1116nm anti-reflection coatings (T>99%); the matching method adopts type I phase matching, and the cutting angle is θ=90°, φ=8°.

Embodiment 3

[0033] Roughly the same as Example 1, the differences are as follows:

[0034] (1) The birefringent filter 5 selects quartz crystal, puts it into the resonant cavity at Brewster's angle (56°), and adjusts its tuning angle to 45.9°.

[0035] (2) Frequency doubling crystal 4 is a lithium triborate (LBO) crystal with a size of 2×2×10mm 3 , both ends of the crystal are coated with 556nm and 1112nm anti-reflection coatings (T>99%); the matching method adopts type I phase matching, and the cutting angle is θ=90°, φ=8.3°.

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Abstract

The invention relates to a full-solid-state single-spectral-line narrow linewidth yellow light laser. Pump light emitted by a laser diode (LD) is subjected to shaping and focusing through a focusing coupling lens system and enters a laser gain medium, the laser gain medium generates photons with the center wavelength as 1112nm, 1116nm or 1123nm through stimulated emission, the generated photons are amplified through feeding of the laser gain medium and a straight resonant cavity device to generate high power density base frequency light standing wave, base frequency photons form laser of 556nm, 558nm or 561nm through frequency doubling of a frequency doubling crystal, and the laser is output through a yellow light output mirror.

Description

technical field [0001] The invention relates to an all-solid-state laser, in particular to an all-solid-state single-spectrum narrow-linewidth yellow laser. Background technique [0002] It is known that 561nm yellow-green light has great uses in biomedicine. It is an ideal light source for confocal microscopes, flow cytometers and other biological imaging devices, and it is also the best wavelength for laser treatment of complex ophthalmic diseases. In addition, it has a wide range of applications in laser display, lighting, molecular biology, etc. [0003] Commonly used yellow lasers include Kr ion laser (568nm), dye laser (577nm) and other lasers, but these lasers have inherent shortcomings. Kr ion laser is a gas laser, its volume and weight are large, and it consumes a lot of power due to low efficiency; dye laser is a liquid laser, which needs to change the dye frequently, which is troublesome to work, and the toxicity of the dye is harmful to the human body, which is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/0941H01S3/08H01S3/16H01S3/109
Inventor 张帆高兰兰董小龙
Owner CHANGCHUN UNIV OF SCI & TECH
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