High-power high-repetition-rate UV light at 355 nm generated by a diode-end-pumped passively Q-switched Nd:YAG laser
| Autor: | Long-sheng Qian, Quan Zheng, Fu-qiang Jia, Yi-kun Bu, Qing-hua Xue |
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| Rok vydání: | 2007 |
| Předmět: |
Materials science
business.industry Laser cutting Materials Science (miscellaneous) Saturable absorption Laser Industrial and Manufacturing Engineering Power (physics) law.invention Crystal chemistry.chemical_compound Optics chemistry law Nd:YAG laser Lithium triborate Optoelectronics Business and International Management business Diode |
| Zdroj: | Applied optics. 46(15) |
| ISSN: | 1559-128X |
| Popis: | We describe experimental results with a diode-pumped, passively Q-switched extracavity second- and third-harmonic generation. Cr:YAG is used as a saturable absorber for pulse generation. Taking into account the thermal effects of Nd:YAG at high incident pump power, we use a short plane-to-plane cavity configuration to take advantage of the maximum pump power and obtain the compactness structure. At the same time, we use the type-I critical phase-matched lithium triborate crystal to generate light at 532 nm and mix the residual fundamental at 1064 nm and the second-harmonic wave at 532 nm in the type-II critical phase-matched lithium triborate crystal for UV light generation at 355 nm. A third-harmonic-generation output power of 1.32 W is achieved at the incident pump power of 27.5 W, corresponding to an optical-to-optical efficiency of 4.8%. The instability of the UV laser power is less than 5% for 4 h. |
| Databáze: | OpenAIRE |
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