Open AccessNon-critical phase-matching conditions for fourth harmonic generation of DKDP crystal
Author(s) -
Shaohua Ji,
Shaojun Zhang,
M. Xu,
Baoan Liu,
Lili Zhu,
Lisong Zhang,
Xinguang Xu,
Zhengping Wang,
Xun Sun
Publication year - 2012
Publication title -
optical materials express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.925
H-Index - 66
ISSN - 2159-3930
DOI - 10.1364/ome.2.000735
Subject(s) - phase matching , materials science , second harmonic generation , optics , high harmonic generation , crystal (programming language) , nonlinear optics , phase (matter) , sum frequency generation , optoelectronics , physics , laser , computer science , quantum mechanics , programming language
The non-critical phase matching (PM) conditions of deuterated dihydrogen phosphate (DKDP) crystal are investigated in this paper for fourth harmonic generation (FHG) of Nd:YAG crystal and Nd:glass lasers, which include exterior angle deviation, deuterium content and PM temperature. DKDP crystals of different deuterium content were grown from aqueous solutions and cut for type-I non-critical phase-matching with the direction at 90° to the crystal Z axis (θ = 90°) and at 45° to the crystal X axis (Ф = 45°). The samples are measured for FHG at 1064 nm and 1053 nm, respectively. The deuterium content of DKDP crystal that supports non-critical phase-matching for FHG experiments is confirmed by measuring the relationship of deuterium content and phase-matching angle. Additionally, the non-critical phase matching temperature is also examined.