High-brightness tapered quantum cascade lasers


Burc Goekden, Tobias S. Mansuripur, Romain Blanchard, Christine Wang, Anish Goyal, Antonio Sanchez-Rubio, George Turner, and Federico Capasso. 2013. “High-brightness tapered quantum cascade lasers.” APPLIED PHYSICS LETTERS, 102, 5.
1.4791557.pdf1.04 MB


An index-guided tapered quantum cascade laser emitting near 9.5 mu m with sloped sidewalls and no anti-reflection coating is presented, and the performance for devices with taper half-angles of 1 degrees and 2 degrees is investigated. The 1 degrees device delivers up to 2.5 W of peak optical power at room temperature with beam quality-factor M-2 = 2.08, while the two-degree device outputs 3.8 W with M-2 = 2.25 for a maximum brightness of 1.87 MW cm(-2) sr(-1). (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4791557]
Last updated on 05/29/2020