NDLI: Polarization-changeable THz time-domain spectroscopy system with a small incident-angle beam-splitter

Content Provider	IEEE Xplore Digital Library
Author	Mochizuki, K. Aoki, M. Tripathi, S.R. Hiromoto, N.
Copyright Year	2009
Description	Author affiliation: Shizuoka University, Hamamatsu, Shizuoka 432-8011, Japan (Mochizuki, K.; Aoki, M.; Tripathi, S.R.; Hiromoto, N.)
Abstract	When the polarization of terahertz (THz) light is measured with THz time-domain spectroscopy (TDS) by switching the polarization angle of THz light, it is preferable that intensities of pump and probe lights are almost constant. Pump and probe lights, which are produced through dividing a femto second (fs) laser pulses by a beam-splitter, must be correlated with orientations of THz emitter and detector as well as the THz polarization angle especially in a TDS adopting nonlinear crystal like ZnTe as an emitter and/or a detector. To achieve small change in the signal against change of the THz polarization, a THz-TDS system with a small incident-angle beam-splitter has been developed, which have smaller polarization dependency in pump and probe lights than ordinary THz-TDS systems adopting a 45-degree incident-angle beam-splitter. The change in THz signal observed with a 10-degree incident-angle THz-TDS was sufficiently small in both transmission and reflection measurements when polarization angle of THz light is switched by 90 degrees.
Starting Page	1
Ending Page	2
File Size	414075
Page Count	2
File Format	PDF
ISBN	9781424454167
DOI	10.1109/ICIMW.2009.5324747
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-21
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Time domain analysis Spectroscopy Optical polarization Probes Submillimeter wave measurements Laser excitation Pump lasers Optical pulses Zinc compounds Optical reflection
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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