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.
Originalsprog | Engelsk |
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Artikelnummer | 043836 |
Tidsskrift | Physical Review A |
Vol/bind | 93 |
Nummer | 4 |
ISSN | 2469-9926 |
DOI | |
Status | Udgivet - 21 apr. 2016 |
Udgivet eksternt | Ja |