Research Article

High-Power Directional Emission from Microlasers with Chaotic Resonators

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Science  05 Jun 1998:
Vol. 280, Issue 5369, pp. 1556-1564
DOI: 10.1126/science.280.5369.1556

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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 magnitude 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.

  • * To whom correspondence should be addressed. E-mail: fc{at}

  • Present address: Université de Neuchâtel, rue Bréguet 1, CH-2000 Neuchâtel, Switzerland.

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