Title :
THz-wave generation based on Crystals KTiOPO4 and KTiOAsO4
Author :
Wang, W.T. ; Zhang, X.Y. ; Cong, Z.H. ; Liu, Z.J. ; Qin, Z.G. ; Chen, X.H. ; Lu, Q.M.
Author_Institution :
Shandong Provincial Key Lab. of Laser Technol., Shandong Univ., Jinan, China
Abstract :
Crystals KTiOPO4 and KTiOAsO4 are used in terahertz parametric oscillators. The transverse optical A1 mode associated with the stimulated polariton scattering for KTiOPO4 is 268.5 cm-1. The intermittently tunable THz wave from 3.17 THz to 6.13 THz is obtained. For KTiOAsO4, the transverse optical A1 mode is 233.8 cm-1 and the intermittently tunable range is from 3.59 THz to 6.43 THz. The appearance of the THz-wave frequency gaps is due to several strongly infrared absorbing A1 modes below 268.5 cm-1 and 233.8 cm-1, respectively.
Keywords :
light sources; optical parametric oscillators; optical tuning; potassium compounds; terahertz wave generation; titanium compounds; KTiOAsO4; KTiOPO4; frequency 3.59 THz to 6.43 THz; intermittently tunable THz wave; stimulated polariton scattering; terahertz parametric oscillator; terahertz wave frequency gap; terahertzwave wave generation; transverse optical A1 mode; Crystals; Frequency conversion; Optical pumping; Optical scattering; Optical surface waves; Oscillators; Surface waves;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956431
