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9 June 2011 Suppression of ASE using the co-doping technology
Jiangang Zheng, Xiongwei Yan, Xinying Jiang, Zhenguo Wang, Wentao Duan, Mingzhong Li
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Proceedings Volume 8080, Diode-Pumped High Energy and High Power Lasers; ELI: Ultrarelativistic Laser-Matter Interactions and Petawatt Photonics; and HiPER: the European Pathway to Laser Energy; 80800S (2011) https://doi.org/10.1117/12.887327
Event: SPIE Optics + Optoelectronics, 2011, Prague, Czech Republic
Abstract
The energy storage in the Cr4+,Yb:YAG crystal amplifier was stimulated under the conditions of concentration thickness product 15at.%mm and pumping power density 20kW/cm2 for different aperture and doped Cr4+ and Yb3+density, using the pumping dynamic model for Cr4+,Yb:YAG crystal amplifier. The results indicated that, the density of energy storage decreases with the increasing of Yb3+ and amplifier aperture in absence of Cr4+; but the co-doped Cr4+ in Yb:YAG crystal would suppress the ASE in amplifier and affect on the energy storage in the amplifier, the ASE decreases with the increasing of co-doped Cr4+. But the maximum energy storage in amplifier increases firstly, and then decreases with the increasing of Cr4+ density. The reason is that, the Cr4+ in amplifier absorb not only the ASE but also the pumping energy. When less co-doped Cr4+, the ASE in amplifier would be serious, but when more co-doped Cr4+, the co-doped Cr4+ would absorb more pumping energy. Namely, in order to obtain maximum energy storage there is an optimized Cr4+ density, which was determined by the Yb3+ density and aperture of amplifier.
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Jiangang Zheng, Xiongwei Yan, Xinying Jiang, Zhenguo Wang, Wentao Duan, and Mingzhong Li "Suppression of ASE using the co-doping technology", Proc. SPIE 8080, Diode-Pumped High Energy and High Power Lasers; ELI: Ultrarelativistic Laser-Matter Interactions and Petawatt Photonics; and HiPER: the European Pathway to Laser Energy, 80800S (9 June 2011); https://doi.org/10.1117/12.887327
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KEYWORDS
Amplifiers
Crystals
Chromium
Absorption
Laser crystals
Optical amplifiers
Fusion energy
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