Multiple frequency one-way overlapped output standard continuous green light laser inside full solid T double-cavity combination cavity
A combined cavity and all-solid-state technology, applied in the laser field, can solve problems such as unstable laser output power, low light-to-light conversion efficiency, and obvious thermal lens effect, so as to reduce thermal effects, improve pumping efficiency, and high turn-off capability Effect
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[0031] Using the laser design scheme shown in Figure 1, we have developed a quasi-continuous green laser with an output power of 202W. The laser is composed of two sub-cavities, and each sub-cavity uses the same type of semiconductor laser pumping component to side-pump Nd : YAG crystal rod, the fundamental frequency 1064nm optical output power of each semiconductor pump component is 200W, and the total fundamental frequency optical power is 400W. The size of Nd:YAG rods are Φ4.0×90mm. Using HGTR-KTP with anti-gray line characteristics as frequency doubling crystal (5×5×15mm 3 , Israel RAICLOCrystals company), adopts the type II critical phase matching method, and implements constant temperature control (temperature is 22°), which not only reduces the thermal lens effect of the frequency doubling crystal, but also compensates the frequency doubling caused by thermal effects to a certain extent Crystal phase mismatch improves frequency doubling efficiency. The Q-switching met...
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