Spectral anomalies of diffracted pulsed Hermite--Gaussian beams in dispersive media
Zhao Zhi-Guo(赵志国)a)b)†, Pan Liu-Zhan(潘留占)a), and Lü-Bai-Da(吕百达)b)
a Department of Physics, Luoyang Normal College, Luoyang 471022, China; b Institute of Laser Physics and Chemistry, Sichuan University, Chengdu 610064, China
Abstract This paper derives and uses the recurrence expressions for the power spectra of diffracted pulsed Hermite--Gaussian (HG) beams in dispersive media to study the spectral anomalies of pulsed HG beams in the far field. Numerical results are given to illustrate the dependence of spectral switches on the pulse parameters, truncation parameter and dispersive property of the medium. The potential application of spectral anomalies of ultrashort pulsed beams in information encoding and transmission is discussed.
Received: 01 April 2007
Revised: 12 December 2007
Accepted manuscript online:
PACS:
42.60.Jf
(Beam characteristics: profile, intensity, and power; spatial pattern formation)
(Ultrafast processes; optical pulse generation and pulse compression)
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 60678055).
Cite this article:
Zhao Zhi-Guo(赵志国), Pan Liu-Zhan(潘留占), and Lü-Bai-Da(吕百达) Spectral anomalies of diffracted pulsed Hermite--Gaussian beams in dispersive media 2008 Chin. Phys. B 17 2451
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