Space-time profiles of an ultrashort pulsed Gaussian beam

Author

Wang, Zhongyang ; Zhang, Zhengquan ; Xu, Zhizhan ; Lin, Qiang

Author_Institution

Inst. of Opt. & Fine Mech., Acad. Sinica, Shanghai, China

Volume

33

Issue

4

fYear

1997

fDate

4/1/1997 12:00:00 AM

Firstpage

566

Lastpage

573

Abstract

By using a different initial value from the previous treatments, we reveal that the pulsed Gaussian beam in free space can be expressed as a simple wave packet along with the complex time, which gives all the information about the spatial and temporal behaviors of the pulse. Then the space-time profiles of a space-time Gaussian pulse are studied. It is shown that even when the pulse propagates in free space, there exist couplings among the beam parameters in space and time. The spot-size-related couplings enlarge the temporal domain (TD) spatial size of the pulse and lessen the carrier frequency of the pulse of the paraxial points, and the wavefront-related couplings bend the transverse spatial shape of the pulse with the wavefront

Keywords

high-speed optical techniques; laser beams; beam parameters; carrier frequency; complex time; couplings; free space; paraxial points; pulsed Gaussian beam; simple wave packet; space-time Gaussian pulse; space-time profiles; spatial behaviors; spot-size-related couplings; temporal behaviors; temporal domain spatial size; transverse spatial shape; ultrashort pulsed Gaussian beam; wavefront-related couplings; Laser beams; Lenses; Optical coupling; Optical distortion; Optical pulse shaping; Optical pulses; Pulse amplifiers; Pulse shaping methods; Shape; Ultrafast optics;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.563385

Filename

563385