OSA's Digital Library

Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 27, Iss. 17 — Sep. 1, 2009
  • pp: 3773–3776

Active Balance in Free-Space Electro-Optic Detection of Terahertz Waves

Brian Schulkin and Xi-Cheng Zhang

Journal of Lightwave Technology, Vol. 27, Issue 17, pp. 3773-3776 (2009)


View Full Text Article

Acrobat PDF (342 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations
  • Export Citation/Save Click for help

Abstract

A method for increasing the stability of terahertz (THz) time-domain spectrometers utilizing electro-optic balanced detection is presented in this paper. The stability of these systems is sensitive to optical alignment and polarization quality; small changes in temperature, pressure, stress, and strain can all affect SNR. High stability is achieved by precise rotation of the quarter-wave plate (QWP) balance position during the operation of the THz spectrometer. Providing feedback via QWP rotation optimizes the noise floor with minimal modulation to the THz signal in a nonideal optical system. Applying active balance control eliminates constant tuning by the operator between scans, after purging with dry nitrogen, applying vacuum, and during system setup.

© 2009 IEEE

Citation
Brian Schulkin and Xi-Cheng Zhang, "Active Balance in Free-Space Electro-Optic Detection of Terahertz Waves," J. Lightwave Technol. 27, 3773-3776 (2009)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-27-17-3773

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited