Ultrafast Group-velocity Control via Cascaded Optical Parametric Amplification

被引：0
|
作者：
Zhou Bingjie [1 ,2 ]
Ma Jingui [1 ]
Yuan Peng [1 ]
Wang Jing [1 ]
Qian Liejia [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Phys & Astron, Key Lab Laser Plasmas MOE, Shanghai 200240, Peoples R China
[2] Shanghai Radio Equipment Res Inst, Shanghai 201109, Peoples R China
来源：
ACTA PHOTONICA SINICA | 2021年 / 50卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Nonlinear optics; Ultrafast group; velocity control; Ultrashort pulse; Optical parametric process; Numerical simulation; SLOW LIGHT; PICOSECOND PULSES; PROPAGATION; DELAY;
D O I：
10.3788/gzxb20215008.0850212
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A method for ultrafast group-velocity control with simultaneously broad bandwidth,large tuning range,and controllable direction is proposed. By aid of cascaded optical parametirc amplification,the linear intensity-modulation of pump will transfer to the linear frequency-phase modulation of chirped signal pulses, enabling the time shift of signal pulses after compression. The tuning range and direction of time shift can be flexibly controlled by tuning the slope of pump modulation. The proposed method supports a large response bandwidth because of no phase-matching requirement, and can control the group velocity for few-cycle pulses in principle. Its feasibility is demonstrated by using both sawtooth-profile and Gaussian-profile pump modulations. It can implement in conventional nonlinear crystals and thus has an application prospect.
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页数：10
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