Enhanced terahertz source based on external cavity difference-frequency generation using monolithic single-frequency pulsed fiber lasers.
We demonstrate a resonant external cavity approach to enhance narrowband terahertz radiation through difference-frequency generation for the first time (to our knowledge). Two nanosecond laser pulses resonant in an optical cavity interact with a nonlinear crystal to produce a factor of 7 enhancement of terahertz power compared to a single-pass orientation. This external enhancement approach shows promise to significantly increase both terahertz power and conversion efficiency through optical pump pulse enhancement and effective recycling.
Petersen
Eliot B
EB
NP Photonics, Incorporated, 9030 South Rita Road, Tucson, Arizona 85747, USA. epetersen@npphotonics.com
Shi
Wei
W
Nguyen
Dan T
DT
Yao
Zhidong
Z
Zong
Jie
J
Chavez-Pirson
Arturo
A
Peyghambarian
N
N