Fresnel filtering in lasing emission from scarred modes of wave-chaotic optical resonators

Details Fresnel filtering in lasing emission from scarred modes of wave-chaotic optical resonators Fresnel filtering in lasing emission from scarred modes of wave-chaotic optical resonators

2001-05-26

arxiv.org/abs/physics/0105089v2

Phys. Rev. Lett. 88, 094102 (2002)

Physics

Optics

4 pages, 3 figures (eps), RevTeX 3.1, submitted to Phys. Rev. Lett; corrected a minor (transcription) error

Scientific paper

10.1103/PhysRevLett.88.094102

We study lasing emission from asymmetric resonant cavity (ARC) GaN micro-lasers. By comparing far-field intensity patterns with images of the micro-laser we find that the lasing modes are concentrated on three-bounce unstable periodic ray orbits, i.e. the modes are scarred. The high-intensity emission directions of these scarred modes are completely different from those predicted by applying Snell's law to the ray orbit. This effect is due to the process of ``Fresnel filtering'' which occurs when a beam of finite angular spread is incident at the critical angle for total internal reflection.

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