High brightness narrow-linewidth microsecond pulse green laser by frequency doubling of a master oscillator power amplifier Nd:YAG laser
| Autor: | Peng-cheng Di, Qing-Shuang Zong, Wen-Jun Li, Qi Bian, Li-Jiao He, Yong Bo, Jun-Wei Zuo, Yu Shen, Chuan Guo, Dafu Cui, Qinjun Peng, Zuyan Xu, Jin-Quan Chang |
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| Rok vydání: | 2018 |
| Předmět: |
Pulse repetition frequency
Materials science business.industry Amplifier Pulse duration 02 engineering and technology 021001 nanoscience & nanotechnology Laser 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention 010309 optics chemistry.chemical_compound Laser linewidth Optics chemistry law Nd:YAG laser 0103 physical sciences Lithium triborate M squared Electrical and Electronic Engineering 0210 nano-technology business |
| Zdroj: | Optics & Laser Technology. 106:294-298 |
| ISSN: | 0030-3992 |
| DOI: | 10.1016/j.optlastec.2018.04.016 |
| Popis: | We demonstrated a high brightness narrow-linewidth microsecond (μs) pulse green laser from second harmonic generation (SHG) of a master oscillator power amplifier (MOPA) laser system. The oscillator was a quasi-continuous wave pulsed diode-side-pumped 1064 nm Nd:YAG laser with an average output power of 45.2 W and a beam quality factor of M2 = 1.21, operating at a pulse repetition frequency of 500 Hz with a ∼160 μs of pulse duration. After a two-stage amplifier, the fundamental output power of MOPA system was increased up to 198 W. Using a type-I lithium triborate nonlinear crystal, the maximum SHG output power of 78.4 W at 532 nm was obtained with a linewidth of 0.54 pm and a beam quality factor M2 less than 1.61. The brightness of the green light was as high as 1.08 × 1010 W/cm2 sr. This is, to the best of our knowledge, the highest brightness solid state light source for the narrow-linewidth μs pulse green lasers at 532 nm. |
| Databáze: | OpenAIRE |
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