High-power directional emission from microlasers with chaotic resonators

Claire F. Gmachl, Federico Capasso, E. E. Narimanov, Jens U. Nöckel, A. Douglas Stone, Jérôme Faist, Deborah L. Sivco, Alfred Y. Cho

Research output: Contribution to journalArticlepeer-review

720 Scopus citations


High-power and highly directional semiconductor microcylinder lasers based on an optical resonator with deformed cross section are reported. In the favorable directions of the far-field, a power increase of up to three orders of magnitudes over the conventional circularly symmetric lasers was obtained. A 'bow-tie'-shaped resonance is responsible for the improved performance of the lasers in the higher range of deformations, in contrast to 'whispering-gallery'-type modes of circular and weakly deformed lasers. This resonator design, although demonstrated here in midinfrared quantum-cascade lasers, should be applicable to any laser based on semiconductors or other high-refractive index materials.

Original languageEnglish (US)
Pages (from-to)1556-1564
Number of pages9
Issue number5369
StatePublished - Jun 5 1998

All Science Journal Classification (ASJC) codes

  • General


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