Alternating high-voltage biasing for terahertz large-area photoconductive emitters

David A. Turton, Gregor H. Welsh, John J. Carey, Gavin D. Reid, Godfrey S. Beddard, Klaas Wynne

Research output: Contribution to journalArticlepeer-review

Abstract

High-voltage biasing is necessary for efficient generation of terahertz radiation using large-area photoconductive emitters and for electric-field-oriented charge-transfer studies. Coherent detection of terahertz pulses allows ac biasing to be the basis of modulation for lock-in detection. Biasing emitters with an ac field also removes the need for a complete conduction path. The experimental advantages of this approach along with a simple resonant method of generating the high-voltage bias applicable to higher-repetition-rate (up to a few hundred kilohertz) regeneratively amplified systems are described. (c) 2006 American Institute of Physics.
Original languageEnglish
Pages (from-to)083111
Number of pages5
JournalReview of Scientific Instruments
Volume77
Issue number8
DOIs
Publication statusPublished - 1 Aug 2006

Keywords

  • submillimetre wave lasers
  • optical pulse generation
  • submillimetre waves
  • photoconducting devices

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