A passive Q-switched laser based on polarization synthesis laser gain
A technology of laser gain and polarization synthesis, applied in the field of lasers, can solve the problems of inability to adjust Q-switched pulse frequency and limit the wide application of passive Q-switched lasers, and achieve the effect of wide application, effective adjustment, and effective frequency
Active Publication Date: 2020-01-17
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology
Therefore, conventional methods are used during the operation of the output frequency of passive Q-switched lasers, and the frequency of Q-switched pulses cannot be effectively adjusted, thus limiting the wide application of passive Q-switched lasers.
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[0028] 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.
[0029] figure 1 It is a schematic structural diagram of a passive Q-switched laser based on polarization synthesis laser gain according to an embodiment of the present invention, such as figure 1 As shown, the passive Q-switched laser includes: pump source 1, focusing coupling mirror group 2, total reflection mirror 3, polarized laser medium 4, half-wave plate 5, polarizer 6, passive Q-switched crystal 7 and output mirror 8 ,in:
[0030] The pump source 1, focusing coupling mirror group 2, total reflection mirror 3, polarizing laser medium 4, half-wave plate 5, polarizing plate 6, passive Q-switching crystal 7 and output mirror 8 are optically coaxially arranged in sequence;
[0031] The total reflection mirror 3 and th...
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Abstract
The invention discloses a passive Q-switched laser based on polarization synthesis laser gain. The passive Q-switched laser includes: a pump source, a focusing coupling mirror group, a total reflection mirror, a polarized laser medium, a half-wave plate, a polarizer, a passive Q-switched crystal and output mirror, wherein: the pump source, focusing coupling mirror group, total reflection mirror, polarized laser medium, half-wave plate, polarizer, passive Q-switched crystal and output mirror are arranged optically coaxially in sequence, and the The all-reflective mirror and the output mirror form a resonant cavity; the polarized laser medium and the half-wave plate form a polarization synthesis gain control function module, which controls the gain of the passive Q-switched laser by rotating the half-wave plate, and realizes effective control of the passive Q-switched laser. pulse frequency. The solution of the invention can achieve gain control of the passive Q-switched laser itself without changing the pump power, without affecting the thermal effect of the crystal, and maintaining a stable state of the resonator, thereby achieving the technical effect of effectively adjusting the frequency of the passive Q-switched laser.
Description
technical field [0001] The invention relates to the technical field of lasers, in particular to a passive Q-switched laser based on polarization synthesis laser gain. Background technique [0002] Passive Q-switched lasers have the advantages of small size, low cost, and compact structure, and have broad market application prospects in laser engraving, display, and stage scenery. [0003] Passive Q-switching is often used in continuous-pumped lasers to obtain high repetition rate pulsed laser output. From the characteristics of passive Q-switching technology, it can be seen that a key point for forming laser pulses is that the laser gain must reach the threshold of the laser. In continuous pumped passive Q-switched lasers, there are often confusions in which the timing and frequency of laser pulses are different. This is because in the multi-mode state, the laser threshold of each mode is different. In order to obtain a stable pulse Q-switched laser output under this condit...
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IPC IPC(8): H01S3/11H01S3/106
CPCH01S3/106H01S3/11
Inventor 王超于永吉陈薪羽吴春婷董渊李述涛金光勇王子健金玉石赵璐
Owner CHANGCHUN UNIV OF SCI & TECH