High-precision measurement of optical frequency differences between Q-switched laser pulses using photo-electromotive-force sensors

Chen Chia Wang, Sudhir Trivedi, Feng Jin, Ken Jia, Hongbo He, Greg Elliott, Jacob Khurgin

Research output: Contribution to journalArticlepeer-review

Abstract

We demonstrate the measurement of optical frequency differences between Q-switched laser pulses by using photo-electromotive-foree (photo-EMF) optical frequency sensors. The presence of high-peak-power laser pulses affords the photo-EMF frequency sensor with ultrafast response times limited only by the free-carrier lifetime of the sensor material. Such fast response times lead to a broad dynamic range for optical difference frequency measurements with an experimentally demonstrated frequency detection bandwidth in excess of 50 MHz, limited only by the capability of our test equipment. Such a large dynamic range for optical frequency detection makes photo-EMF sensors ideal candidates for adaptive remote sensing of high-speed objects.

Original languageEnglish (US)
Pages (from-to)177-182
Number of pages6
JournalJournal of the Optical Society of America B: Optical Physics
Volume19
Issue number2
DOIs
StatePublished - Feb 2002
Externally publishedYes

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics

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