Efficient parametric terahertz generation in quasi-phase-matched GaP through cavity enhanced difference-frequency generation
Abstract
We report an efficient parametric terahertz (THz) source by using bonded quasi-phase-matched (QPM) GaP crystals pumped by the C-band pulsed fiber lasers in a master oscillator power amplifier configuration, based on difference frequency generation (DFG). We observed that the QPM-GaP crystals can effectively increase the THz generation power and efficiency by increasing the number of periods. Moreover, we observed external cavity enhanced THz DFG by placing the QPM-GaP crystal in an external ring cavity. The THz cavity enhancement factor of approximately 250 has been achieved in comparison with a single-pass THz DFG. The maximum THz average power can reach 339 μW, corresponding to a power conversion efficiency of 2.43×10−4 and a quantum efficiency of 3.16%.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 21, 2011
- Source ID
- 10.1063/1.3571550
Entities
People
- Adam T. Cooney
- Arturo Chavez-pirson
- Eliot B. Petersen
- N. Peyghambarian
- Wei Shi
Organizations
- Air Force Research Laboratory
- Army Research Office
- University of Arizona