Three-terminal output dual-wavelength laser

A dual-wavelength laser, three-terminal output technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of application field limitation, optical power attenuation, light spot degradation, etc., and achieve excellent comprehensive performance and comprehensive performance improvement. , Optimize the effect of fundamental frequency optical power

Inactive Publication Date: 2014-01-22
HUAQIAO UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the loss of the optical splitting element will cause the attenuation of optical power and the degradation of the light spot, the application field is limited

Method used

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  • Three-terminal output dual-wavelength laser
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  • Three-terminal output dual-wavelength laser

Examples

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Effect test

Embodiment 1

[0028] A dual-wavelength laser with three-terminal output of the present invention, the embodiment is as follows figure 1 As shown, it is a three-terminal output dual-wavelength laser with an end-pumped V-cavity structure. It includes a semiconductor laser end-pumping system 1 and an optical resonant cavity; the optical resonant cavity is composed of an input cavity mirror 2 and a V-cavity output mirror 8. This optical resonant cavity is a V-shaped folded cavity, and the V-shaped folded cavity is simultaneously along the optical path. The laser crystal 3, the phase retarder 4, the film polarizer 5, the V-cavity folding mirror 6 and the nonlinear optical crystal 7 are arranged in sequence.

[0029] Semiconductor laser end-pumping system 1 consists of two parts: a fiber-coupled semiconductor laser and a focusing lens group with a coupling ratio of 1:2. A semiconductor laser with a maximum output power of 30W, an emission center wavelength of 808nm, a fiber core diameter of 200μ...

Embodiment 2

[0039] Embodiment two of the present invention is as figure 2 As shown, it is a three-terminal output dual-wavelength laser with a side-pumped V-cavity structure. It differs from Embodiment 1 only in that the semiconductor laser side pumping system 9 is used instead of the semiconductor laser end pumping system 1, and the parameters of the laser crystal 3 are adaptively adjusted.

[0040] Among them, the maximum pumping power of semiconductor laser side pumping system 9 reaches 300W, and the emission center wavelength is 808nm.

[0041] Laser crystal 3 is Nd:YAG crystal doped with neodymium yttrium aluminum garnet, with a size of Φ3×90mm 3 , the doping concentration is 0.5at.%. The light-transmitting surface of the laser crystal 3 is coated with an anti-reflection film system for 808nm and 1064nm. The 808nm pumping light directly pumps the side of the laser crystal 3 to form laser oscillation through the V-shaped resonant cavity.

Embodiment 3

[0043] Embodiment three of the present invention is as image 3 As shown, it is a three-terminal output dual-wavelength laser with an end-pumped Z-cavity structure. It includes a semiconductor laser end-pumping system 1 and an optical resonant cavity; the optical resonant cavity is composed of an input cavity mirror 2 and a Z-cavity output mirror 12. This optical resonant cavity is a Z-shaped folded cavity, and the Z-shaped folded cavity is in accordance with the optical path at the same time. Place laser crystal 3 , phase retarder 4 , film polarizer 5 , first Z-cavity fold mirror 10 , second Z-cavity fold mirror 11 and nonlinear optical crystal 7 in order.

[0044] Semiconductor laser end-pumping system 1 consists of two parts: a fiber-coupled semiconductor laser and a focusing lens group with a coupling ratio of 1:2. A semiconductor laser with a maximum output power of 30W, an emission center wavelength of 808nm, a fiber core diameter of 200μm, and a numerical aperture of 0...

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Abstract

The invention discloses a three-terminal output dual-wavelength laser, which comprises a semiconductor laser pumping system and an optical resonant cavity for forming laser oscillation, wherein the optical resonant cavity is a V-shaped folding resonant cavity; in addition, an input cavity mirror, a laser crystal, a phase delay piece, a thin film polarizer, a V-shaped cavity folding mirror, a nonlinear optical crystal and a V-shaped cavity output mirror are sequentially arranged on an optical path of the V-shaped folding resonant cavity; fundamental-frequency light and variable-frequency light generated in the V-shaped folding resonant cavity are output from the V-shaped cavity folding mirror, the V-shaped cavity output mirror and the thin film polarizer respectively to realize the simultaneous output of three terminals. According to the three-terminal output dual-wavelength laser, a reasonable structural design is adopted for the optical resonant cavity, and laser is simultaneously output in three directions, so that the application fields of an all-solid-state dual-wavelength laser are expanded; a proper cavity mirror film system and a proper optical crystal are selected to optimize the power of the fundamental-frequency light in the cavity, so that the overall performance of the laser is greatly improved, and the three-terminal output dual-wavelength laser can be widely applied to the fields of holographic interference, photo-thermal interference and the like with a requirement on a plurality of light sources.

Description

technical field [0001] The invention relates to the technical field of solid-state lasers, in particular to a three-terminal output dual-wavelength laser. Background technique [0002] In recent years, more and more fields such as interference rainbow holography, fine laser spectroscopy, differential absorption lidar (DIAL), laser medicine, and laser display have shown the demand for dual-wavelength lasers. All-solid-state dual-wavelength lasers have It has practical advantages such as simple and compact structure, high efficiency, good output beam quality, covering important wave bands, high power stability and low price. These unique advantages make it have broad application prospects. [0003] At present, there are roughly three types of common dual-wavelength lasers: the first is the simultaneous output of single-ended fundamental frequency light and its frequency doubled light; the second is the simultaneous output of two fundamental frequency lights with similar wavel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/08H01S3/101
Inventor 庄凤江蒲继雄吴逢铁
Owner HUAQIAO UNIVERSITY
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