@inproceedings{52cee19de31442c4afc3c7e4863c57b8,
title = "Wavelength beam combining of quantum cascade laser arrays for remote sensing",
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.",
keywords = "distributed feedback, laser arrays, laser beam combining, quantum cascade laser",
author = "Lee, {Benjamin G.} and Jan Kansky and Goyal, {Anish K.} and Christian Pfl{\"u}gl and Laurent Diehl and Belkin, {Mikhail A.} and Antonio Sanchez and Federico Capasso",
year = "2009",
doi = "10.1117/12.826497",
language = "English",
isbn = "9780819477507",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Lidar Remote Sensing for Environmental Monitoring X",
note = "Lidar Remote Sensing for Environmental Monitoring X ; Conference date: 03-08-2009 Through 03-08-2009",
}