Translator Disclaimer
Paper
24 May 1999 Mid-infrared THz beam sensors: exploration and application for phonon spectroscopy
Author Affiliations +
Abstract
We present an investigation of coherent mid-infrared pulse measurement system using free-space electro-optic sampling technique. A series of nonlinear materials are investigated for the nonresonant optical rectification and electro-optic sampling for the generation and detection, respectively. A sampling bandwidth up to 40 THz is achieved. For spectroscopic application we present THz field radiation by optically excited coherent phonons in the mid-infrared frequency range. We compare the THz radiation under extremely different excitation conditions. The comparison shows the THz radiation property of the resonantly driven phonons in the surface field layer. Furthermore we investigate the coherent reststrahl band reflectivity in the time domain. Unexpectedly strong oscillations are observed near the longitudinal-optical phonon frequency. This THz waveform is discussed with the reststrahl band dispersion of the reflectivity.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Peng Yu Han, Gyu Cheon Cho, and Xi-Cheng Zhang "Mid-infrared THz beam sensors: exploration and application for phonon spectroscopy", Proc. SPIE 3624, Ultrafast Phenomena in Semiconductors III, (24 May 1999); https://doi.org/10.1117/12.349299
PROCEEDINGS
10 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Ultrafast dynamics in topological insulators
Proceedings of SPIE (March 14 2013)
Comparison of GaAs and DAST electro optic crystals for THz...
Proceedings of SPIE (February 23 2011)
Nonlinear THz response of n-type GaAs
Proceedings of SPIE (February 06 2009)
Terahertz photonics: ultrafast physics and applications
Proceedings of SPIE (February 17 2003)
Mid-infrared properties of quantum dot lasers
Proceedings of SPIE (October 30 2001)

Back to Top