Solid-state laser amplifier and laser with side-pumping of optical fiber light guide
A solid-state laser and amplifier technology, applied in the field of lasers, can solve the problems of low mode requirements, complex overall structure, poor relative stability, etc., and achieve the effect of simplifying the transmission and absorption process, simplifying the structure, and improving stability.
Active Publication Date: 2016-03-02
先进光电子(重庆)有限公司
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Problems solved by technology
When the end face is pumped, the end face through which the pumping light passes is collimated and focused into the inside of the gain medium, and the energy distribution of the pumping light in the gain area is easy to control and relatively uniform, so that the output laser beam quality is better, and it is suitable for sheet-shaped or long-length laser beams. Short rod-shaped and block-shaped gain media; however, in this way, the pumping light needs to adopt a collimating and focusing optical system, and it is on the same optical path as the laser, and a splitting optical element needs to be added to separate the pumping light from the laser. The structure is more complex and the relative stability is poor
For side pumping, the pumping light passes through the inside of the gain medium from the side through the concentrating device, and is reflected multiple times to improve the utilization rate. This pumping method has lower requirements on the mode of the pumping light and does not occupy the optical path of the laser. The optical paths of the pumping light and the laser are separated, the structure is simple, and the stability is high, but it is only suitable for rod-shaped or block-shaped gain media with a long length
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[0020] The invention provides a solid-state laser amplifier that adopts optical fiber light guide side pumping. The solid-state laser amplifier includes a gain medium 2 and a pumping light transmission fiber 3 wound on the gain medium 2 .
[0021] The gain medium 2 includes a side surface and an end surface; the pumping optical transmission fiber 3 is tightly coiled on the side surface of the gain medium 2 .
[0022] The part between the pumping light transmission optical fiber 3 and the gain medium 2 except the phase contact surface is bonded by curing glue.
[0023] The side surfaces and end surfaces of the gain medium 2 are optically polished.
[0024] The refractive index of the pumping light transmission fiber 3 is smaller than that of the gain medium 2 .
[0025] The shape of the gain medium 2 is a sheet, a short rod or a short block.
[0026] When the present invention provides the above-mentioned solid-state laser amplifier, it also provides a kind of laser formed ba...
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The invention relates to a solid laser beam amplifier and a laser based on the laser beam amplifier. The solid laser beam amplifier using the side pumping of the optical fiber light guide comprises a gain medium and a pumping light transmitting optical fiber, wherein the pumping light transmitting optical fiber is wound on the gain medium. The solid laser beam amplifier and the laser based on the amplifier have the advantages that the structure of the laser or the amplifier can be simplified, and the integral stability of the laser or the amplifier can be improved.
Description
technical field [0001] The invention belongs to the field of lasers, and relates to a solid-state laser amplifier and a laser formed based on the laser amplifier; in particular, it relates to a solid-state laser amplifier that adopts fiber winding gain medium light guide for side pumping and a laser formed based on the laser amplifier . Background technique [0002] Solid-state lasers or amplifiers pumped by semiconductor lasers are currently the most widely used class of lasers / amplifiers. At present, the gain medium of this type of laser / amplifier is a solid material such as crystal, glass, or ceramic doped with gain elements, and its shape is rod, block, or sheet. The pumping method of the laser / amplifier is divided into end pumping and side pumping. When the end face is pumped, the end face through which the pumping light passes is collimated and focused into the inside of the gain medium, and the energy distribution of the pumping light in the gain area is easy to con...
Claims
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IPC IPC(8): H01S3/16H01S3/091
Inventor 高存孝薛彬朱少岚杨直赵卫王屹山
Owner 先进光电子(重庆)有限公司