Exact Evolution of Ultrashort Hollow-Airy Pulses in the Spatiotemporal Domain
ZHANG Jing-Fang, WANG Zhao-Ying** , LIN Qiang**
Institute of Optics, Department of Physics, Zhejiang University, Hangzhou 310027
Abstract ：An exact analytic expression for an ultrashort hollow-Airy wave packet is presented beyond the slowly varying envelope approximation. The hollow-Airy wave packet combines the hollow-Gaussian beam in the spatial domain and the Airy pulse in the temporal domain. The spatiotemporal propagation dynamics of the ultrashort hollow-Airy pulse are analyzed by the numerical simulations. During the propagation in free space, the spatial intensity profile evolves from hollow-Gaussian to Gaussian shape; the temporal intensity profile retains Airy shape over several Rayleigh ranges. The acceleration property of the ultrashort Airy pulse is also demonstrated.
出版日期: 2014-12-23
:
42.65.Re
(Ultrafast processes; optical pulse generation and pulse compression)
92.60.Ta
(Electromagnetic wave propagation)
42.60.Jf
(Beam characteristics: profile, intensity, and power; spatial pattern formation)
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2015, Vol. 32 
