Single-mode tapered quantum cascade lasers


Patrick Rauter, Stefan Menzel, B. Gokden, Anish K. Goyal, Christine A. Wang, Antonio Sanchez, George Turner, and Federico Capasso. 2013. “Single-mode tapered quantum cascade lasers.” APPLIED PHYSICS LETTERS, 102, 18.
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We demonstrate tapered quantum cascade lasers monolithically integrated with a distributed Bragg reflector acting as both a wavelength-selective back mirror and a transverse mode filter. Each of the 14 devices operates at a different wavelength between 9.2 and 9.7 mu m, where nine devices feature single-mode operation at peak powers between 0.3 and 1.6W at room temperature. High output power and excellent beam quality with peak brightness values up to 1.6 MW cm(-2) sr(-1) render these two-terminal devices highly suitable for stand-off spectroscopy applications. (C) 2013 AIP Publishing LLC.
Last updated on 06/09/2020