[en] Dielectric microcavities are widely used as laser resonators and characterizations of their spectra are of interest for various applications. We experimentally investigate microlasers of simple shapes ͑Fabry-Perot, square, pentagon, and disk͒. Their lasing spectra consist mainly of almost equidistant peaks and the distance between peaks reveals the length of a quantized periodic orbit. To measure this length with a good precision, it is necessary to take into account different sources of refractive index dispersion. Our experimental and numerical results agree with the superscar model describing the formation of long-lived states in polygonal cavities. The limitations of the two-dimensional approximation are briefly discussed in connection with
microdisks.
Disciplines :
Physics
Author, co-author :
Lebental, M
Djellali, N
Arnaud, C
Lauret, J.-S.
Zyss, J.
Dubertrand, Rémy ; Université de Liège - ULiège > Département de physique > Optique quantique
Schmit, C.
Bogomolny, E.
Language :
English
Title :
Inferring periodic orbits from spectra of simply shaped microlasers
Publication date :
2007
Journal title :
Physical Review. A, Atomic, molecular, and optical physics
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