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.
- submillimetre wave lasers
- optical pulse generation
- submillimetre waves
- photoconducting devices
Turton, D. A., Welsh, G. H., Carey, J. J., Reid, G. D., Beddard, G. S., & Wynne, K. (2006). Alternating high-voltage biasing for terahertz large-area photoconductive emitters. Review of Scientific Instruments, 77(8), 083111. https://doi.org/10.1063/1.2336764