GAUSSIAN BEAMS

Near-field diffraction characteristics of a time-dependent Gaussian-shaped pulsed beam from a circular aperture

[+] Author Affiliations
Hone-Ene Hwang, Gwo-Huei Yang

Chung Chou Institute of Technology, Department of Electronic Engineering, Yuan-lin?510, Taiwan E-mail: hiko@dragon.ccut.edu.tw

Pin Han

Da-Yeh University, Department of Electrical Engineering, Da-Tsuen?515, Taiwan

Opt. Eng. 42(3), 686-695 (Mar 01, 2003). doi:10.1117/1.1539518
History: Received May 17, 2002; Revised Jul. 26, 2002; Accepted Sep. 13, 2002; Online March 07, 2003
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The diffraction characteristics of a broadband light source from a circular aperture in the near field are theoretically clarified via a prompt and precise mathematical derivation. We provide a rigorous way of treating in the case of a time-dependent Gaussian-shaped pulsed beam passing through a circular aperture and give a more accurate and concrete criteria for judging the timing for the spectral red and blue shifts and the splitting of light distributions. In addition, the distortion of the space-time diffraction intensity distribution is also presented in detail. Hence, the results offer a clear understanding about the Gaussian beam quality of the output of optical resonator in the near-field diffraction. © 2003 Society of Photo-Optical Instrumentation Engineers.

© 2003 Society of Photo-Optical Instrumentation Engineers

Citation

Hone-Ene Hwang ; Gwo-Huei Yang and Pin Han
"Near-field diffraction characteristics of a time-dependent Gaussian-shaped pulsed beam from a circular aperture", Opt. Eng. 42(3), 686-695 (Mar 01, 2003). ; http://dx.doi.org/10.1117/1.1539518


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