Wavelength beam combining of quantum cascade laser arrays for remote sensing
Name
Lee-2009-Wavelength beam combining of quantum cascade laser arrays for remote sensing.pdf
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496.34 KB
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Adobe PDF
Checksum (MD5)
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Author(s)
Sanchez-Rubio, Antonio
Goyal, Anish K.
Kansky, Jan E.
Capasso, Federico
Belkin, M. A.
Diehl, Laurent
Pflügl, Christian
Lee, Benjamin G.
Date Issued
August 2009
Journal
Proceedings of SPIE--the International Society for Optical Engineering; v.7460
Publisher
The International Society for Optical Engineering
Citation
Lee, Benjamin G. et al. “Wavelength beam combining of quantum cascade laser arrays for remote sensing.” Lidar Remote Sensing for Environmental Monitoring X. Ed. Upendra N. Singh. San Diego, CA, USA: SPIE, 2009. 746004-9. © 2009 SPIE--The International Society for Optical Engineering
Version
Final published version
Abstract
Wavelength beam combining was used to co-propagate beams from 28 elements in a linear array of distributedfeedback quantum cascade lasers (DFB-QCLs). The overlap of the beams in the far-field is improved using wavelength beam combining; the beam-quality product of the array, defined as the product of near-field spot size and far-field divergence for the entire array, was improved by a factor of 21. We measured the absorption spectrum of isopropanol at a distance of 6 m from the laser arrays, demonstrating the efficacy of wavelength beam combined DFB-QCL arrays for remote sensing.
MIT Department
Lincoln Laboratory
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
http://dx.doi.org/10.1117/12.826497
