Chinese Optics Letters, 2015, 13 (4): 041601, Published Online: Sep. 21, 2018
Phase matching characteristics of deuterated ammonium dihydrogen phosphate crystals Download: 1069次
160.4760 Optical properties 160.4330 Nonlinear optical materials 260.1180 Crystal optics 190.4400 Nonlinear optics, materials
Abstract
Refractive indices for crystals ammonium dihydrogen phosphate (ADP), 30% deuterated ADP (DADP), 50% DADP, and 70% DADP are measured from 253 to 1529 nm with 5 × 10 6 accuracy. Numerical fits to modified double-pole Sellmeier equation are made. Second-harmonic generation, third-harmonic generation phase matching (PM) angles, and noncritical PM (NCPM) wavelengths are calculated using the Sellmeier parameters. The deuterated crystals show smaller PM angles than pure crystal. Fourth-harmonic generation process can be realized by DADP in smaller deuterium content than deuterated potassium dihydrogen phosphate (DKDP). The measured NCPM wavelengths are consistent with the calculated value. PM characteristics are compared between DADP and DKDP.
Lili Zhu, Baoan Liu, Lisong Zhang, Qinghua Zhang, Zhengping Wang, Xun Sun. Phase matching characteristics of deuterated ammonium dihydrogen phosphate crystals[J]. Chinese Optics Letters, 2015, 13(4): 041601.