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Proceedings Paper

Substrate emission quantum cascade ring lasers with room temperature continuous wave operation
Author(s): Y. Bai; S. Tsao; N. Bandyopadhyay; S. Slivken; Q. Y. Lu; M. Razeghi
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Paper Abstract

We demonstrate room temperature, continuous wave operation of quantum cascade ring lasers around 5 μm with single mode operation up to 0.51 W output power. Single mode operation persists up to 0.4 W. Light is coupled out of the ring cavity through the substrate with a second order distributed feedback grating. The substrate emission scheme allows for epilayer-down bonding, which leads to room temperature continuous wave operation. The far field analysis indicates that the device operates in a high order mode.

Paper Details

Date Published: 20 January 2012
PDF: 6 pages
Proc. SPIE 8268, Quantum Sensing and Nanophotonic Devices IX, 82680N (20 January 2012); doi: 10.1117/12.913655
Show Author Affiliations
Y. Bai, Northwestern Univ. (United States)
S. Tsao, Northwestern Univ. (United States)
N. Bandyopadhyay, Northwestern Univ. (United States)
S. Slivken, Northwestern Univ. (United States)
Q. Y. Lu, Northwestern Univ. (United States)
M. Razeghi, Northwestern Univ. (United States)

Published in SPIE Proceedings Vol. 8268:
Quantum Sensing and Nanophotonic Devices IX
Manijeh Razeghi; Eric Tournie; Gail J. Brown, Editor(s)

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