Investigation on Gain Properties of N31 Neodymium Glass Slab AmplifiersLei Wen, Lin Chen, Jianguo Liu, Yuanbin Chen, Xudong Xie, Yong Liu, Kuixing Zheng, Wei Chen, Lili Hu, and Yiqun Wu
As one of the most important element in the inertial confinement fusion (ICF) laser device, slab amplifier provides over 99% energy. The integration-test-bed (ITB) is established for the research of ICF in China with the single- beam output energy up to 19.6 kJ (pulse width 5 ns, center wavelength 1053 nm). This paper studies characteristics of N31 neodymium glass in 400 mm aperture, single-segment amplifying system of ITB. The N31 glasses with size of 810 mm×460 mm×40 mm and Nd3+ ion concentration of 3.5×1020 cm-3 are used. Results show that combined with the optimized parameters of discharge circuit for slab amplifier and structure of pump cavity, the small signal gain coefficient reaches 5.28% cm-1, the gain ratio is 15:1 , and the gain uniformity is 1.063∶1 (maximum/ average) within 360 mm beam diameter.As one of the most important element in the inertial confinement fusion (ICF) laser device, slab amplifier provides over 99% energy. The integration-test-bed (ITB) is established for the research of ICF in China with the single- beam output energy up to 19.6 kJ (pulse width 5 ns, center wavelength 1053 nm). This paper studies characteristics of N31 neodymium glass in 400 mm aperture, single-segment amplifying system of ITB. The N31 glasses with size of 810 mm×460 mm×40 mm and Nd3+ ion concentration of 3.5×1020 cm-3 are used. Results show that combined with the optimized parameters of discharge circuit for slab amplifier and structure of pump cavity, the small signal gain coefficient reaches 5.28% cm-1, the gain ratio is 15:1 , and the gain uniformity is 1.063∶1 (maximum/ average) within 360 mm beam diameter.showLess - Apr. 29, 2016
- Chinese Journal of Lasers
- Vol.43 Issue, 4 402008 (2016)
- DOI:10.3788/cjl201643.0402008