Acta Photonica Sinica, Volume. 49, Issue 11, 26(2020)
High-efficiency Broadband 2.5th Harmonic Generation of High-energy Nd:Glass Lasers (Invited)
We propose a highly-efficient broadband up-conversion technique, which enables the efficient production of broadband 2.5th harmonic lasers (centered at 421.5 nm) in the violet-blue region from fundamental Nd∶glass lasers (at 1 054 nm). Based on the nonlinear mixing of a frequency-doubled Nd:glass laser and a broadband mid-infrared laser centered at 2 100 nm with an incident energy ratio of 4∶1, and a noncollinear configuration that enables simultaneous phase-matching and group-velocity matching, a broadband 2.5th harmonic laser with a pulsed energy of 12.4 J and a bandwidth of 10.4 nm (relative bandwidth bigger than 2%) is produced. These results indicate the potentiality of producing high-power violet-blue lasers in 100-TW scale, and provide guidelines for developing ultrashort ultraintense lasers at short-wavelengths.
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Jing WANG, Peng YUAN, Jin-gui MA, Lie-jia QIAN. High-efficiency Broadband 2.5th Harmonic Generation of High-energy Nd:Glass Lasers (Invited)[J]. Acta Photonica Sinica, 2020, 49(11): 26
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Published Online: Mar. 11, 2021
The Author Email: QIAN Lie-jia (qianlj19@sjtu.edu.cn)