Home | About Journal | Web Links | E-mail Alerts | RSS RSS Icon | Browse
Previous Article Next Article

Time-Domain Coherent Anti-Stokes Raman Scattering Signal Detection for Terahertz Vibrational Spectroscopy Using Chirped Femtosecond Pulses

Source: Appl. Phys. Express 3, 072401 (2010); doi:10.1143/APEX.3.072401

Issue Date: August 2010

PUBLICATION DATA
ISSN:
1553-9601 (online)
Publisher:
AIP is a member of CrossRef JSAP
Masahiko Tani
Research Center for Development of Far-Infrared Region, University of Fukui, Fukui 910-8507, Japan

Toshiyuki Koizumi
Institute of Laser Engineering, Osaka University, Suita, Osaka 565-0871, Japan

Hisashi Sumikura
Basic Research Laboratories, NTT Corporation, Atsugi, Kanagawa 243-0198, Japan

Mariko Yamaguchi
Department of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan

Kohji Yamamoto
Research Center for Development of Far-Infrared Region, University of Fukui, Fukui 910-8507, Japan

Masanori Hangyo
Institute of Laser Engineering, Osaka University, Suita, Osaka 565-0871, Japan
A new scheme for low-frequency coherent anti-Stokes Raman scattering spectroscopy (CARS) using chirped femtosecond pulses is proposed and demonstrated. Two chirped broadband optical pulses created terahertz (THz) polarization in the sample and generated CARS signal. The chirped CARS signal was then compressed by a pulse compressor and detected by a time gating technique. A resonant Raman band of GaSe at around 0.6 THz was successfully observed with the time-domain CARS technique. With the present system, CARS spectra from 0.2 to 5 THz are obtainable. ©2010
Permalink: http://dx.doi.org/10.1143/APEX.3.072401
ADVERTISEMENT