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Proceedings Paper

Type-II superlattices and quantum cascade lasers for MWIR and LWIR free-space communications
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Paper Abstract

Free-space optical communications has recently been touted as a solution to the "last mile" bottleneck of high-speed data networks providing highly secure, short to long range, and high-bandwidth connections. However, commercial near infrared systems experience atmospheric scattering losses and scintillation effects which can adversely affect a link's operating budget. By moving the operating wavelength into the mid- or long-wavelength infrared enhanced link uptimes and increased operating range can be achieved due to less susceptibility to atmospheric affects. The combination of room-temperature, continuous-wave, high-power quantum cascade lasers and high operating temperature type-II superlattice photodetectors offers the benefits of mid- and long-wavelength infrared systems as well as practical operating conditions for next generation free-space communications systems.

Paper Details

Date Published: 1 February 2008
PDF: 9 pages
Proc. SPIE 6900, Quantum Sensing and Nanophotonic Devices V, 690005 (1 February 2008); doi: 10.1117/12.776376
Show Author Affiliations
Andrew Hood, Northwestern Univ. (United States)
Allan Evans, Northwestern Univ. (United States)
Manijeh Razeghi, Northwestern Univ. (United States)


Published in SPIE Proceedings Vol. 6900:
Quantum Sensing and Nanophotonic Devices V
Rengarajan Sudharsanan; Christopher Jelen, Editor(s)

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