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Laser and wavelength tuning method

A laser and optical parametric oscillator technology, applied in the field of laser technology and nonlinear optics, can solve the problems of insufficient stability and reliability, complex mechanical structure, slow tuning speed, etc., and achieve fast tuning speed, small size, and reliability high effect

Inactive Publication Date: 2018-09-07
江苏马庄文化旅游发展有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The invention provides a laser and a wave modulation method, which overcomes the problems of complex mechanical structure, large volume, slow tuning speed, insufficient stability and reliability of traditional wavelength tunable lasers

Method used

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  • Laser and wavelength tuning method

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solution of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] Such as figure 1 As shown, it is a laser proposed by the embodiment of the present invention, which is characterized in that it is composed of a DBR laser 1, an ytterbium-doped fiber laser 3, a waveguide frequency multiplier 4 and an optical parametric oscillator 5 arranged on the same axis in sequence, wherein the DBR An isolator 2 is installed between the laser 1 and the ytterbium-doped fiber laser 3, and the DBR laser 1, the isolator 2, the ytterbium-doped fiber laser 3, t...

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Abstract

The invention discloses a laser and a wavelength tuning method. According to the method, a wavelength-tunable DBR laser injects seed light into a fiber laser to generate high-power near-infrared laserlight, tunable green pumping laser light is generated through frequency doubling of a waveguide-type chirp superlattice, and then a waveguide-type optical parametric oscillator generates wavelength-tunable red laser light. The wavelength of the seed light of a DBR is tuned at 500-530nm, and the wavelength-tunable red laser light of 600-700nm is generated. The laser does not include a mechanical moving part, wavelength tuning is implemented through electrically controlled modulation, and the laser is small in volume, high in reliability and high in tuning speed.

Description

technical field [0001] The invention relates to the fields of laser technology and nonlinear optics, in particular to a laser and a wave modulation method. Background technique [0002] At present, there is a wide demand for visible light lasers, especially red lasers, in scientific research fields such as biology and materials, and in industrial fields such as medical treatment and testing. At present, the commonly used red lasers are mostly semiconductor and solid-state lasers. Due to the limitation of the laser emission mechanism and the performance of laser materials, their output wavelengths are mostly fixed bands such as 630nm, 650nm, and 671nm. The wavelength cannot be tuned arbitrarily, which greatly limits its use. applications in the above fields. For example, in the process of photodynamic therapy to treat tumors, photosensitizers need to be assisted to generate singlet oxygen to kill cancer cells. Different photosensitizers have great differences in the absorpti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/125H01S5/04H01S5/06
CPCH01S5/125H01S5/041H01S5/06H01S5/0605
Inventor 王利厉慧卿孙中芹郝成侠田盼
Owner 江苏马庄文化旅游发展有限公司
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