Abstract

The development of semiconductor lasers in the deep ultra-violet (UV) spectral range is attracting a strong interest, related to their multiple applications for optical storage, biochemistry or optical interconnects. UV-emitting ridge lasers usually embed nitride heterostructures grown on complex buffer layers or expensive substrates – an approach that cannot be extended to nano-photonics and microlasers. We demonstrate here the first deep UV microlaser by combining binary GaN/AlN thin quantum wells (QWs) grown on a silicon substrate and high quality factor microdisk resonators. Those microdisk lasers operate at 275nm at room temperature under optical pumping.

© 2015 IEEE