Wavelength-Stable 1.1-kW Diode Laser Array Cooled by Liquid Metal
| Autor: | Xue-Peng Li, Yu-Peng Wang, Peng-cheng Di, Ke Liu, Jing Liu, Xu-Dong Zhang, Qinjun Peng, Yi-Xin Zhou, Xiao-Jun Wang, Jing Yang, Zuyan Xu |
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| Rok vydání: | 2020 |
| Předmět: |
Liquid metal
Materials science Laser diode business.industry Energy conversion efficiency Physics::Optics Heat sink Laser Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Vertical-cavity surface-emitting laser law Optoelectronics Electrical and Electronic Engineering business Lasing threshold Diode |
| Zdroj: | IEEE Photonics Technology Letters. 32:434-437 |
| ISSN: | 1941-0174 1041-1135 |
| DOI: | 10.1109/lpt.2020.2976628 |
| Popis: | We demonstrate a high power two-dimensional vertical-cavity surface-emitting laser (VCSEL) array cooled by liquid metal. An output power of 1.1 kW at 808 nm with 39% power conversion efficiency (PCE) is obtained under continuous-wave (CW) operation. To the best of our knowledge, this is the highest output power reported for a laser diode array with liquid metal cooling. Moreover, the wavelength drift is only 1.2 nm from lasing threshold to 1.1 kW output power. Using this laser diode array as pumping module, a solid-state Nd:YAG slab laser at 1064 nm reaches 312 W output power. This verifies that the laser diode array cooled by liquid metal can be used as a pumping source for high power lasers. The higher power scaling can be achieved by two-dimensional geometric extension to the macro-channel heat sink and increasing the flux of the liquid metal. |
| Databáze: | OpenAIRE |
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