Title :
Monochromatic Cherenkov THz Source Pumped by a Singly Resonant Optical Parametric Oscillator
Author :
Pengxiang Liu ; Degang Xu ; Jiaqi Li ; Chao Yan ; Zhongxiao Li ; Yuye Wang ; Jianquan Yao
Author_Institution :
Key Lab. of Opto-Electron. Inf. & Tech. Sci. (Minist. of Educ.), Tianjin Univ., Tianjin, China
Abstract :
We report an improvement of terahertz (THz) output energy via Cherenkov-type difference frequency generation by developing the dual-wavelength pump source, which is based on a singly resonant near-degenerated optical parametric oscillator. Total utilization efficiency of pump energy is considerably increased by recycling the residual fundamental wave. The highest energy of Cherenkov-type monochromatic THz generation is achieved to be 1.58 nJ/pulse. A tuning range of 0.1-3.2 THz is demonstrated.
Keywords :
Cherenkov radiation; optical parametric oscillators; optical pumping; terahertz wave generation; Cherenkov-type difference frequency generation; dual-wavelength pump source; frequency 0.1 THz to 3.2 THz; monochromatic Cherenkov THz source; pump energy; residual fundamental wave; singly resonant near-degenerated optical parametric oscillator; singly resonant optical parametric oscillator; terahertz output energy; total utilization efficiency; Crystals; Frequency conversion; Laser beams; Laser excitation; Optimized production technology; Pump lasers; Tuning; Cherenkov phase matching; difference frequency generation; terahertz-wave generation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2014.2300172
