Thermally-Compensated High Power Nd: YAG Slab Laser Module With Low Wavefront Distortion
| Autor: | Yang Li, Chen Zhongzheng, Yan-Yong Lin, Ya-Ding Guo, Wen-Jun Li, Zuyan Xu, Chong-Feng Shao, Shuai Meng, Qinjun Peng, Lin Zhang, Lei Yuan, Yong Bo |
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| Rok vydání: | 2020 |
| Předmět: |
Diffraction
Wavefront Materials science business.industry Amplifier 02 engineering and technology Laser Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Temperature gradient 020210 optoelectronics & photonics Optics law Distortion 0202 electrical engineering electronic engineering information engineering Slab M squared Electrical and Electronic Engineering business |
| Zdroj: | IEEE Photonics Technology Letters. 32:31-34 |
| ISSN: | 1941-0174 1041-1135 |
| DOI: | 10.1109/lpt.2019.2956074 |
| Popis: | A low-order wavefront aberration self-compensation high power Nd:YAG slab laser module is developed and demonstrated. By numerical simulating the thermal distribution and transmission wavefront of the slab laser medium, a thermally-compensated heat removal geometry is developed to reduce the wavefront distortion. This method allows the non-uniform cooling to flatten the thermal gradient distribution in the width direction of the slab. By using the optimized gain module as an amplifier, the laser output power of 7.8 kW is achieved. Compared to the traditional module, the output power is 7.3 kW, and the peak-to-valley (PV) value of the wavefront distortion is reduced from 17.21 to $2.05~\mu \text{m}$ under full power, the beam quality factor $\beta $ is improved from 12.7 to 3.5 times diffraction limited while without additional correction system. |
| Databáze: | OpenAIRE |
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