High power terahertz generation using 1550 nm plasmonic photomixers
Abstract
We present a 1550 nm plasmonic photomixer operating under pumping duty cycles below 10%, which offers significantly higher terahertz radiation power levels compared to previously demonstrated photomixers. The record-high terahertz radiation powers are enabled by enhancing the device quantum efficiency through use of plasmonic contact electrodes, and by mitigating thermal breakdown at high optical pump power levels through use of a low duty cycle optical pump. The repetition rate of the optical pump can be specifically selected at a given pump duty cycle to control the spectral linewidth of the generated terahertz radiation. At an average optical pump power of 150 mW with a pump modulation frequency of 1 MHz and pump duty cycle of 2%, we demonstrate up to 0.8 mW radiation power at 1 THz, within each continuous wave radiation cycle.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 07, 2014
- Source ID
- 10.1063/1.4890102
Entities
People
- Arthur C. Gossard
- Christopher W. Berry
- Hong Lu
- Mohammad R. Hashemi
- Mona Jarrahi
- Sascha Preu
Organizations
- Army Research Office
- National Science Foundation
- Office of Naval Research
- Technical University of Darmstadt
- University of California
- University of California, Los Angeles
- University of Michigan