Reflection of a Gaussian laser pulse by an active medium

✍ Scribed by J. Fan; L.J. Wang

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 234 KB
• Volume: 259
• Category: Article
• ISSN: 0030-4018
• DOI: 10.1016/j.optcom.2005.11.007

✦ Synopsis

The reflected laser pulse is both temporally and spatially displaced due to spatial and chromatic dispersions when a Gaussian laser pulse is incident onto an active medium. In the case of no chromatic dispersion, the temporal shift is linearly related to the spatial Goos-Ha ¨nchen shift. Furthermore, for an incident TE-mode laser pulse, the transmitted laser pulse shifts spatially and temporally by exactly a half of that of the reflected laser pulse. We further point out that, compared to the Goos-Ha ¨nchen shift at the critical angle which was conventionally considered the maximum, the Goos-Ha ¨nchen shift for the grazing incidence is bigger by one order of magnitude. This can greatly ease the direct experimental study of the Goos-Ha ¨nchen shift.