Widely tunable high-power external cavity quantum cascade laser operating in continuous-wave at room temperature
Publication information:
R. Maulini, I. Dunayevskiy, A. Lyakh, A. Tsekoun, C. K. N. Patel, L. Diehl, C. Pfluegl, and F. Capasso. 2009. “Widely Tunable High-Power External Cavity Quantum Cascade Laser Operating in Continuous-Wave at Room Temperature”. ELECTRONICS LETTERS, 45, 2, Pp. 107-U30. doi:10.1049/el:20093057
Abstract
A grating-coupled external cavity quantum cascade laser operating in continuous-wave at room temperature is reported. Single-frequency operation tunable over more than 160 cm(-1) around the centre wave-length of 4.6 mu m has been observed at a chip temperature of 300 K. The maximum optical power at the gain peak was 300 mW, corresponding to a wall-plug efficiency of 6%. Observed power output at the gain bandwidth edges was in excess of 125 mW.