作者
Claire Gmachl, Federico Capasso, EE Narimanov, Jens U Nöckel, A Douglas Stone, Jérôme Faist, Deborah L Sivco, Alfred Y Cho
发表日期
1998/6/5
期刊
Science
卷号
280
期号
5369
页码范围
1556-1564
出版商
American Association for the Advancement of Science
简介
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.
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C Gmachl, F Capasso, EE Narimanov, JU Nöckel… - Science, 1998