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High-efficiency laser multi-pass amplification device

An amplifying device and high-efficiency technology, which is applied to lasers, laser components, phonon exciters, etc., can solve the problems of affecting the output efficiency of the amplifier and the limited suppression effect, so as to reduce the thermal lens effect, reduce the influence, and shorten the cavity length Effect

Pending Publication Date: 2019-12-10
河南省启封新源光电科技有限公司
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Problems solved by technology

[0004] Aiming at the problems that existing laser amplifiers have limited suppression effect and affect amplifier output efficiency in the process of suppressing lateral parasitic oscillation and thermal lens effect, the present invention provides a high-efficiency laser multi-pass amplification device

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Embodiment Construction

[0027] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the present invention Examples, not all examples. 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.

[0028] like figure 1 As shown, the present invention also provides a high-efficiency laser multi-pass amplification device, including: two pump source units, gain medium 7, cooling device 8 and seed light reflector group; two pumping source units in the embodiment of the present invention The source units are: a first pump source unit and a second pump source unit. The first pu...

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Abstract

The invention provides a high-efficiency laser multi-pass amplification device. The device comprises two pumping source units, a gain medium and a seed light reflection mirror group. Each pumping source unit comprises a pumping source and a pumping light reflecting mirror. The seed light reflection mirror group comprises a first seed light reflecting mirror, a second seed light reflecting mirror and a third seed light reflecting mirror. The gain medium is cylindrical, an upper bottom surface of the gain medium is provided with a first film layer, a lower bottom surface is provided with a second film layer, and a side surface is provided with threads. The pumping source unit is located at an upper bottom surface side of the gain medium, and a reflecting surface of the pumping light reflecting mirror faces towards an upper bottom surface of the gain medium. The seed light reflecting mirror group is located on the lower bottom surface side of the gain medium. The first film layer reflectsseed light and transmits pump light, and the second film layer transmits the seed light and reflects the pump light. By increasing a frequency of the pump light penetrating through the gain medium, transverse parasitic oscillation can be greatly reduced while the output efficiency of an amplifier is kept.

Description

technical field [0001] The invention relates to the technical field of ultrashort pulse laser amplifiers, in particular to a high-efficiency laser multi-pass amplifier. Background technique [0002] At present, femtosecond laser systems based on Chirped Pulse Amplification (CPA) technology can reach a peak power of 10PW. While pursuing high peak power, since the terminal amplifier must use a large-caliber gain medium, its transverse gain is much greater than the longitudinal gain. When the energy density of the pump laser is high enough, transverse parasitic oscillations will be generated in the gain medium, consuming the energy stored in the The energy in the gain medium; in addition, when the gain medium absorbs the pump light, part of the energy will be stored in the gain medium to heat it up, and the temperature gradient in the gain medium in thermal equilibrium will make it a lens-like Medium, this is the thermal lens effect. Thermal lensing not only distorts the wave...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/091H01S3/10H01S3/06H01S3/042H01S3/081
CPCH01S3/091H01S3/10084H01S3/061H01S3/0621H01S3/042H01S3/0623H01S3/0815
Inventor 鲁巍洪德昇张颖力林春里
Owner 河南省启封新源光电科技有限公司
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