Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
1998-06-15
Science Vol. 280, 1556-1564 (1998)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Removed minor discrepancies with published version in the text and in Fig. 4
Scientific paper
10.1126/science.280.5369.1556
High-power and highly directional semiconductor cylinder-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.
Capasso Federico
Cho Alfred Y.
Faist Jérôme
Gmachl Claire
Narimanov Evgenii E.
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