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Neodymium-doped langasite self-frequency-doubling ultra-short pulse laser

A self-frequency doubling and laser technology, applied in the laser field, can solve the problems of insufficient laser beam quality and large divergence angle, and achieve the effect of good cross application potential, high pulse width and high repetition frequency.

Active Publication Date: 2015-05-27
INST OF PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

However, considering the high-power pumping, the laser crystal has a thermal lens effect, so the beam quality of the laser with the crystal as the output end is not good enough, and it has a large divergence angle

Method used

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  • Neodymium-doped langasite self-frequency-doubling ultra-short pulse laser
  • Neodymium-doped langasite self-frequency-doubling ultra-short pulse laser
  • Neodymium-doped langasite self-frequency-doubling ultra-short pulse laser

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Embodiment Construction

[0035] The inventors of the present application found that Nd-doped La 3 Ga 5 SiO 14 The crystal has laser self-frequency doubling effect, which can be applied to self-frequency doubling ultrashort pulse laser by using this property.

[0036] The self-frequency doubling ultrashort pulse laser of the present invention adopts Nd ion-doped La 3 Ga 5 SiO 14 The crystal (hereinafter abbreviated as Nd: LGS crystal) acts as the gain medium and frequency doubling crystal of the laser at the same time, which can simultaneously generate fundamental frequency and frequency doubling laser in the resonator and stabilize the output. The laser of the present invention may generally include a pump source, an optical focusing system, and a laser resonant cavity, and the Nd:LGS crystal is arranged in the laser resonant cavity. The pumping source is used to provide pumping laser light, and the optical focusing system is arranged between the pumping source and the laser resonant cavity, and ...

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Abstract

The invention provides a neodymium-doped langasite self-frequency-doubling ultra-short pulse laser. The self-frequency-doubling ultra-short pulse laser is used for directly outputting fundamental-frequency laser and doubled-frequency laser, and comprises a laser self-frequency-doubling crystal which serves as a gain medium and a frequency-doubling crystal of the laser; the laser self-frequency-doubling crystal is an Nd ion-doped La3Ga5SiO14 crystal. The laser provided by the invention has high operability and stability, and has the advantages of compact and small structure, simple system, relatively low cost, fundamental-frequency laser and double-frequency ultra-short pulse laser output, high repetition frequency, pulse width of pico-second order, high light beam quality, and the like, is widely applied to the fields of display, medical treatment, information transmission, scientific research and the like, and has a very good application prospect and a commercial value.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a neodymium-doped gallium lanthanum silicate self-frequency-multiplied ultrashort pulse laser. Background technique [0002] Lanthanum gallium silicate (La 3 Ga 5 SiO 14 , abbreviated as LGS) crystal is a multifunctional material, and its good piezoelectric properties, electro-optical properties and dielectric properties have been widely used. As a piezoelectric material, due to its huge application potential, it has become a research hotspot all over the world. In the application of acoustic surface waves, it is one of the few crystals that can meet multiple technical requirements at the same time; as an electro-optic material, it is used as Electro-optic Q-switches have been widely used in lasers; as dielectric materials, their excellent properties have also attracted extensive attention and research. As a laser gain medium, neodymium (Nd) ion-doped La 3 Ga 5 SiO 14 Cryst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/16H01S3/109H01S3/11H01S3/08H01S3/098
Inventor 魏志义刘家兴王兆华王庆张治国
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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