Metal-cavity surface-emitting microlaser at room temperature

Chien-Yao Lu; Shu-Wei Chang; Shun Lien Chuang; Germann, Tim D.; Bimberg, Dieter
June 2010
Applied Physics Letters;6/21/2010, Vol. 96 Issue 25, p251101
Academic Journal
We propose and realize a substrate-free metal-cavity surface-emitting microlaser with both top and sidewall metal and a bottom distributed Bragg reflector as the cavity structure. The transfer-matrix method is used to design the laser structure based on the round-trip resonance condition inside the cavity. The laser is 2.0 μm in diameter and 2.5 μm in height, and operates at room temperature with continuous-wave mode. Flip-bonding the device to a silicon substrate with a conductive metal provides efficient heat removal. A high characteristic temperature about 425 K is observed from 10 to 27 °C.


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