Title :
High-energy, continuously tunable intracavity terahertz-wave parametric oscillator
Author :
Yao, J.Q. ; Wang, Y.Y. ; Xu, D.G. ; Zhong, K. ; Wang, Z. ; Wang, P.
Author_Institution :
Inst. of Laser & Optoelectron., Tianjin Univ., Tianjin, China
Abstract :
We have demonstrated an intracavity THz optical oscillator pumped by a diode-side-pumped Q-switched Nd:YAG laser. Based on a noncollinear phase matching geometry in the nonlinear crystal MgO:LiNbO3, high-energy, low-threshold, coherent tunable Stokes light is obtained by changing the angle between the resonated idler wave and the pump wave, which means that the widely tunable, high-energy, coherent THz radiation is also generated. The tuning range for Stokes wave is 1069.4-1073.4 nm, corresponding to the THz frequency range of 1.4-2.5 THz. The phenomenon of the coherent tunable second-order Stokes light scattering is also observed.
Keywords :
laser tuning; lithium compounds; magnesium compounds; optical parametric oscillators; optical phase matching; optical pumping; solid lasers; terahertz wave devices; terahertz wave generation; LiNbO3:MgO; Q-switched laser; YAG:Nd; coherent THz radiation; coherent tunable Stokes light; coherent tunable second-order Stokes light scattering; continuously tunable intracavity terahertz-wave parametric oscillator; diode side pumping; frequency 1.4 THz to 2.5 THz; high-energy terahertz-wave parametric oscillator; high-energy tunable Stokes light; low-threshold tunable Stokes light; noncollinear phase matching geometry; nonlinear crystal; resonated idler wave; wavelength 1069.4 nm to 1073.4 nm; Diodes; Geometrical optics; Laser excitation; Nonlinear optics; Optical frequency conversion; Optical pumping; Optical scattering; Oscillators; Pump lasers; Tunable circuits and devices;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5416-7
Electronic_ISBN :
978-1-4244-5417-4
DOI :
10.1109/ICIMW.2009.5325753
