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End-face pump green light laser

A technology of end-pumping and lasers, which is applied to lasers, laser parts, phonon exciters, etc., can solve problems such as energy instability and poor beam quality, and achieve the effects of small overall size, stable power, and good beam quality

Inactive Publication Date: 2009-05-20
WUHAN LINGYUN PHOTOELECTRONICS SYST
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Problems solved by technology

[0003] In order to overcome the shortcomings of poor output beam quality and unstable energy of side-pumped linear cavity lasers, and to enable 532nm lasers to be more widely and more stably used in industrial processing, manufacturing and other fields, the present invention adopts a new structure. A frequency-doubling crystal is inserted into the cavity to obtain an end-pumped green laser with good beam quality (near the fundamental mode), stable power, air cooling, and laser output with a wavelength of 532nm

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Embodiment Construction

[0008] The present invention combines the attached figure 1 , its technical scheme is described in detail as follows: total reflection mirror 2, cavity mirror 6 and output mirror 13 constitute the laser resonant cavity; 7, 8, and 9 form a coupling focusing system 10; the pump light 11 is incident into the laser crystal 5 through the coupling focusing system 10 to generate the fundamental frequency light 4; the Q-switched crystal 3 is placed on the optical axis 1 to generate pulsed laser light; the fundamental frequency The light 4 oscillates in the resonant cavity, a nonlinear effect occurs in the frequency doubling crystal 14, and the frequency doubling produces a frequency doubling laser 15, which is output from the output mirror 13; it is pumped by an optical fiber 12; the pumping unit is composed of an optical fiber 12 and a coupling focusing mirror 10 , the pump light 11 is focused along the optical axis 1 through the coupling focusing mirror 10, and is incident on the in...

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Abstract

The invention relates to an end face pump green-light laser which comprises a V-type folding cavity, a coupling and focusing system, a pump unit, a laser crystal, a frequency doubling crystal and a Q adjusting device. The end face pump green-light laser adopts a V-type folding optical circuit structure; basic frequency light produced by a resonant cavity is subjected to frequency doubling through the frequency doubling crystal in the cavity to produce frequency doubling light; and the frequency doubling light is output. The laser has reasonable design, novel conception, a normative process, a compact structure and no pollution, is suitable for industrialized batch production, and can be widely applied to communication, precise electron and other fields.

Description

technical field [0001] The invention relates to designing a new type of laser, in particular to an end-pumped green laser. Background technique [0002] At present, most domestic commercial 532nm lasers use a linear cavity and side-pumped structure. Although this structure is simple and can obtain a large laser output, due to the asymmetric structure of the cavity itself, the laser cannot be based on Mode output, the laser output with better beam quality cannot be obtained directly, and the laser output energy is unstable due to the thermal lens effect. At the same time, due to the low conversion rate, most of the pump energy is converted into heat energy, and the heat dissipation method can only be water cooling, resulting in a large overall volume, and the addition of cooling water has brought hidden dangers to safety. Contents of the invention [0003] In order to overcome the shortcomings of poor output beam quality and unstable energy of the side-pumped linear cavity...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/08H01S3/109H01S3/094H01S3/11
Inventor 王锋吕超
Owner WUHAN LINGYUN PHOTOELECTRONICS SYST
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