Phase Control of Few-Cycle Coherent Terahertz Radiation Pulses
XING Qi-Rong, LANG Li-Ying, LI Shu-Xin, MAO Fang-Lin, CHAI Lu, WANG Qing-Yue
Ultrafast Laser Laboratory, School of Precision Instrument & Optoelectronics Engineering, Tianjin University, Tianjin 300072
Key Laboratory of Optoelectronics Information and Technical Science (Ministry of Education), Tianjin University, Tianjin 300072
Phase Control of Few-Cycle Coherent Terahertz Radiation Pulses
Ultrafast Laser Laboratory, School of Precision Instrument & Optoelectronics Engineering, Tianjin University, Tianjin 300072
Key Laboratory of Optoelectronics Information and Technical Science (Ministry of Education), Tianjin University, Tianjin 300072
Abstract： We report a method to control the carrier-envelope phase shift in nearly single-cycle coherent terahertz (THz) radiation pulses, in which we used Kerr effect and two-photon absorption in the generated crystals due to the pump beam peak intensity. Dependence of relative carrier-envelope phase shift of THz pulses on the pump beam intensity in the ZnTe crystal was measured experimentally. Under our experimental condition, we measured that maximum relative phase shift is 0.29 radians.
2005, Vol. 22 
