2016/12/16 by Xiaohui Zhao, Yuanlin Zheng, Zhao, Xiaohui +9
Chemistry · Engineering · Physics and Astronomy · #FOS: Physical sciences #Optics (physics.optics) #Photonic Crystals and Applications #Spectroscopy and Laser Applications #Thermal Radiation and Cooling Technologies #physics.optics
paper · pdf · doi:10.48550/arxiv.1612.05376
arxiv created 2016/12/16 · openalex publication_date 2016/12/16 · arxiv updated 2016/12/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We investigate the generation of ultraviolet (UV) second-harmonic radiation on the boundary of a UV transparent crystal, which is derived from the automatic partial phase matching of the incident wave and the total internal reflection. By adhering to another UV non-transparency crystal with larger second-order nonlinear coefficient χ(2), an nonlinear interface with large disparity in χ(2) is formed and the enhancement of UV second-harmonic radiation is observed experimentally. The intensity of enhanced second harmonic wave generated at the nonlinear interface was up to 11.6 times at the crystal boundary. As a tunable phase-matching method, it may suggest potential applications in the UV, even vacuum-UV, spectral region.