Chinese Optics Letters, 2019, 17 (8): 081401, Published Online: Jul. 16, 2019
Non-collinear phase-matching sum-frequency generation based on boundary total reflection in bulk KDP Download: 831次
140.3610 Lasers, ultraviolet 190.2620 Harmonic generation and mixing 190.4400 Nonlinear optics, materials
Abstract
Collinear phase-matching of sum-frequency generation (SFG) has been studied thoroughly previously, while non-collinear schemes are sometimes more flexible in application. However, this phase-matching type is more difficult to meet and control. We employ a convenient method to obtain harmonic generation in bulk potassium dihydrogen phosphate (KDP), using an incident wave vector and a reflected wave vector to create a triangle phase-matching relationship. With a simple, flexible set-up, we can observe 351 nm SFG, and the conversion efficiency is up to ~3.6% per reflection. Furthermore, we believe this approach has potential application value and improvement space.
Yan Guan, Fang Wang, Ying Yang, Deen Wang, Xin Zhang, Qiang Yuan, Wei Zhou, Dongxia Hu, Xuewei Deng, Huaijin Ren. Non-collinear phase-matching sum-frequency generation based on boundary total reflection in bulk KDP[J]. Chinese Optics Letters, 2019, 17(8): 081401.