Room temperature, high-efficiency, noncritical phase-matching fourth harmonic generation in partially deuterated ADP crystal.
High-efficiency frequency conversion into the deep ultraviolet in a partially deuterated ammonium dihydrogen phosphate (ADP) crystal is reported. For a 60% deuterated ADP crystal, the spontaneous Raman scattering intensity decreased by 38% compared with that of a pristine ADP crystal. At room temperature (24°C), noncritical phase-matching fourth harmonic generation of a 1053 nm laser was realized. The angular acceptance was 55.7 mrad, and the external conversion efficiency from 526 to 263 nm reached 85.3%.
State Key Laboratory of Crystal Materials, Shandong University, Jinan, China.
Shaohua
S
Ji
Fang
F
Wang
Miaomiao
M
Xu
Lili
L
Zhu
Xinguang
X
Xu
Zhengping
Z
Wang
Xun
X
Sun