title: Non-critical phase-matching fourth harmonic generation of a 1053-nm laser in an ADP crystal.
abstract: In current inertial confinement fusion (ICF) facilities, KDP and DKDP crystals are the second harmonic generation (SHG) and third harmonic generation (THG) materials for the Nd:glass laser (1053 nm). Based on the trend for the development of short wavelengths for ICF driving lasers, technical solutions for fourth harmonic generation (FHG) will undoubtedly attract more and more attention. In this paper, the rapid growth of an ADP crystal and non-critical phase-matching (NCPM) FHG of a 1053-nm laser using an ADP crystal are reported. The NCPM temperature is 33.7°C. The conversion efficiency from 526 to 263 nm is 70%, and the angular acceptance range is 55.4 mrad; these results are superior to those for the DKDP crystals. This research has shown that ADP crystals will be a competitive candidate in future ICF facilities when the utilisation of high-energy, high-efficiency UV lasers at wavelengths shorter than the present 351 nm is of interest.
authors.affiliation: State Key Laboratory of Crystal Materials, Shandong University, Ji'nan 250100, China.
authors.forename: Shaohua
authors.initials: S
authors.lastname: Ji
authors.forename: Fang
authors.initials: F
authors.lastname: Wang
authors.forename: Lili
authors.initials: L
authors.lastname: Zhu
authors.forename: Xinguang
authors.initials: X
authors.lastname: Xu
authors.forename: Zhengping
authors.initials: Z
authors.lastname: Wang
authors.forename: Xun
authors.initials: X
authors.lastname: Sun
mesh_terms: D003460:Crystallization; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D008420:Manufactured Materials / Q000032:analysis*
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