Terahertz-wave parametric gain of stimulated polariton scattering

Autor:	Jun-ichi Shikata, Zhengli Han, Hiroaki Minamide, Yu Tokizane, Yuma Takida, Takashi Notake, Kouji Nawata, Shin'ichiro Hayashi, Mio Koyama
Rok vydání:	2016
Předmět:	Physics Range (particle radiation) Scattering Terahertz radiation Physics::Optics 01 natural sciences 010309 optics Crystal symbols.namesake Brillouin scattering 0103 physical sciences symbols Polariton Atomic physics 010306 general physics Raman scattering Parametric statistics
Zdroj:	Physical Review A. 93
ISSN:	2469-9934 2469-9926
Popis:	We have experimentally determined the terahertz- (THz-) wave parametric gain of stimulated Raman scattering (SRS) by phonon-polaritons in $\mathrm{LiNb}{\mathrm{O}}_{3}$. Our approach is based on ultrabright THz-wave generation from SRS under stimulated Brillouin scattering suppression with subnanosecond pump pulses. To obtain the frequency dependence of the parametric gain, we measured the crystal-length dependence of the THz-wave output directly using a surface-coupling configuration. We found that the product of the parametric gain and the threshold crystal length is constant throughout the tuning range. Our result provides a physical basis for the design and performance enhancement of SRS-based ultrabright tabletop THz-wave sources for various applications.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a4defcb9376c24b2c00f7f98af29ecec https://doi.org/10.1103/physreva.93.043836 Zobrazit plný text záznamu