Laser diode stacks: pulsed light power for nuclear fusion

被引:10
作者
Woelz, Martin [1 ]
Pietrzak, Agnieszka [2 ]
Kindsvater, Alex [1 ]
Meusel, Jens [1 ]
Stolberg, Klaus [1 ]
Huelsewede, Ralf [2 ]
Sebastian, Juergen [2 ]
Loyo-Maldonado, Valentin [1 ]
机构
[1] Jenopt Laser GmbH, Goschwitzer Str 29, D-07745 Jena, Germany
[2] Jenopt Diode Lab GmbH, Max Planck Str 2, Berlin, Germany
来源
HIGH POWER LASER SCIENCE AND ENGINEERING | 2016年 / 4卷
关键词
diode pumped; DPSSL; high-energy class; IFE; inertial fusion energy; laser diode; solid-state-laser; YB/YAG;
D O I
10.1017/hpl.2016.13
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Laser drivers are an enabling factor to inertial confinement fusion, because laser diodes must be used instead of flash lamps. We discuss the limitations of laser diode arrays and show what steps the industry is taking. The pump power requirements of large-scale projects such as LIFE or HiPER are within reach of semiconductor laser diode assemblies. Pulsed light output powers per laser bars have been around 300 W per bar, as in the Jenoptik 940 nm bars previously used for pumping the Yb:YAG slabs in the DiPOLE project. By redesigning the semiconductor laser structures 500 W per bar is now commercially available for 808, 880 and 940 nm pump wavelengths. The construction of one inertial fusion power plant will require an amount of semiconductor laser chips in excess of the current annual production by two orders of magnitude. This adds to the engineering task of improving the device characteristics a challenge to production capacity. While the industry benefits from the recent boost in solid-state lighting that acts as a technology driver, cooperation between manufacturers will be imperative, and to this end we propose standardization efforts.
引用
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页数:8
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