Phase matching characteristics of deuterated ammonium dihydrogen phosphate crystals

Lili Zhu; Baoan Liu; Lisong Zhang; Qinghua Zhang; Zhengping Wang; Xun Sun

doi:10.3788/COL201513.041601

Journals >Chinese Optics Letters >Volume 13 >Issue 4 >Page 041601 > Article

Chinese Optics Letters
Vol. 13, Issue 4, 041601 (2015)

Phase matching characteristics of deuterated ammonium dihydrogen phosphate crystals

Lili Zhu^1、2, Baoan Liu^1、2, Lisong Zhang^1、2, Qinghua Zhang³, Zhengping Wang^1、2, and Xun Sun^1、2、*

Author Affiliations

¹State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China

²Key Laboratory of Functional Crystal Materials and Device, Shandong University, Ministry of Education, Jinan 250100, China

³Chengdu Fine Optical Engineering Research Center, Chengdu 610041, China

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DOI: 10.3788/COL201513.041601 Cite this Article Set citation alerts

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 Copy Citation Text

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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 \times 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.