Terahertz-wave parametric gain of stimulated polariton scattering

Yuma Takida*, Jun Ichi Shikata, Kouji Nawata, Yu Tokizane, Zhengli Han, Mio Koyama, Takashi Notake, Shin'Ichiro Hayashi, Hiroaki Minamide

*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

33 Citations (Scopus)

Abstract

We have experimentally determined the terahertz- (THz-) wave parametric gain of stimulated Raman scattering (SRS) by phonon-polaritons in LiNbO3. 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.

Original languageEnglish
Article number043836
JournalPhysical Review A
Volume93
Issue4
ISSN2469-9926
DOIs
Publication statusPublished - 21 Apr 2016
Externally publishedYes

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