Amplified total internal reflection

J. Fan, A. Dogariu, L. J. Wang

Research output: Contribution to journalArticlepeer-review

43 Scopus citations


Totally internal reflected beams can be amplified if the lower-index medium has gain. We analyze the reflection and refraction of light, and analytically derive the expression for the Goos-Hänchen shifts of a Gaussian beam incident on a lower-index medium, both active and absorptive. We examine the energy flow and the Goos-Hänchen shifts for various cases. The analytical results are consistent with the numerical results. For the TE mode, the Goos-Hänchen shift for the transmitted beam is exactly half of that of the reflected beam, resulting in a "1/2" rule.

Original languageEnglish (US)
Pages (from-to)299-308
Number of pages10
JournalOptics Express
Issue number4
StatePublished - Feb 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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