All-optical tunable group-velocity control of femtosecond pulse by quadratic nonlinear cascading interactions.
Based on cascading nonlinear interactions of second harmonic generation (SHG) and difference frequency generation (DFG), we present a novel scheme to control the group velocity of femtosecond pulse in MgO doped periodically poled lithium niobate crystal. Group velocity of tunable signal pulse can be controlled by another pump beam within a wide bandwidth of 180nm. Fractional advancement of 2.4 and fractional delay of 4 are obtained in our simulations.
Department of Physics, State key lab of advanced optical communication systems and networks, Shanghai Jiaotong University, 200240, Shanghai, China.
Wenjie
W
Lu
Yuping
Y
Chen
Lihong
L
Miu
Xianfeng
X
Chen
Yuxing
Y
Xia
Xianglong
X
Zeng
D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D009556:Niobium / Q000737:chemistry*; D017711:Nonlinear Dynamics; D055095:Optics and Photonics / Q000295:instrumentation*; D010087:Oxides / Q000737:chemistry*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*
D010087:Oxides; D009556:Niobium; C091692:lithium niobate