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Chin. Phys. B, 2008, Vol. 17(7): 2451-2457    DOI: 10.1088/1674-1056/17/7/019
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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.
Keywords:  singular optics      spectral anomaly      pulsed Hermite--Gaussian beam      dispersive medium  
Received:  01 April 2007      Revised:  12 December 2007      Accepted manuscript online: 
PACS:  42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation)  
  42.65.Re (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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