A Laser Amplifier Based on Polarization Synthesis Laser Gain
A laser amplifier and laser gain technology, applied in the field of lasers, can solve the problems of waste of output parameters, high cost of seed laser, etc., and achieve the effect of avoiding waste and increasing control accuracy
Active Publication Date: 2019-12-20
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology
However, there are some problems in this mode of changing the energy of the seed laser and setting the pump power of the laser amplifier: the cost of the seed laser in the entire laser system is very high. In order to realize the variable energy of the laser system, it is necessary to insert a polarization device at the output end of the seed laser The energy of the laser amplifier at the incident end causes a waste of the seed laser output parameters on resources
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[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0024] figure 1 It is a structural schematic diagram of a laser amplifier based on polarization synthesis laser gain according to an embodiment of the present invention, as figure 1 As shown, the laser amplifier includes a pump source 1, a focusing coupling lens group 2, a total reflection mirror 3, a polarized laser medium 4, a half-wave plate 5, a 45-degree Faraday rotator 6, and a polarizer 7, wherein:
[0025] The pumping source 1, the focusing coupling lens group 2, the total reflection mirror 3, the polarized laser medium 4, the half-wave plate 5, the 45-degree Faraday rotator 6 and the polarizing plate 7 are optically coaxially arranged in sequence;
[0026] The pump light generated by the pump source 1 first pass...
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The invention discloses a laser amplifier based on polarization synthesis laser gain. The laser amplifier includes: a pump source, a focusing coupling lens group, a total reflection mirror, a polarizing laser medium, a half-wave plate, a 45-degree Faraday rotator and a polarizing plate , wherein: the pump source, focusing coupling lens group, total reflection mirror, polarizing laser medium, half-wave plate, 45-degree Faraday rotator and polarizing plate are arranged optically coaxially in sequence; the polarizing laser medium and half-wave plate are composed of The polarization synthesis gain control function module controls the synthesis laser gain of the laser amplifier by rotating the half-wave plate. The solution of the invention can realize the gain control of the amplifier itself under the condition that the amplifier injects a certain energy, that is, the thermal effect of the laser system remains unchanged, and achieves the technical effect of changing the output energy of the amplifier.
Description
technical field [0001] The invention relates to the technical field of lasers, in particular to a laser amplifier based on polarization synthesis laser gain. Background technique [0002] In many application scenarios, it is necessary to use high-quality laser beams, that is, single transverse mode and single longitudinal mode laser beams, but the laser working in single mode, due to its large cavity loss and small mode volume, its output power or energy is usually will be restricted. In order to increase the power or energy, a laser amplifier is required. [0003] A laser amplifier refers to a device that uses stimulated radiation of light to amplify the energy (power) of light. By using a laser amplifier, the quality of the laser (including pulse width, line width, polarization characteristics, etc.) can be maintained while obtaining higher laser energy or power. [0004] At present, the adjustment of the output power of the laser amplifier is mainly realized by changin...
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IPC IPC(8): H01S3/10
CPCH01S3/10023H01S3/10061
Inventor 王超李述涛于永吉陈薪羽吴春婷董渊王子健金玉石赵璐金光勇
Owner CHANGCHUN UNIV OF SCI & TECH