Title :
High-Power Single-Mode Distributed-Feedback Interband Cascade Lasers for the Midwave-Infrared
Author :
Kim, C.S. ; Kim, M. ; Bewley, W.W. ; Canedy, C.L. ; Lindle, J.R. ; Vurgaftman, I. ; Meyer, J.R.
Author_Institution :
Naval Res. Lab., Washington, DC
Abstract :
A single-mode output power of 41 mW has been obtained at T=120 K and lambdaap3.44 mum from a narrow-ridge interband cascade laser patterned with a Ge distributed-feedback grating. The sidemode suppression ratio at the maximum power is 23 dB, and the linewidth of 0.1 nm is instrument-limited. An alternate contacting geometry yielded robust single-mode output over a broad range of currents and temperatures, and current tuning of the wavelength by up to 17 nm
Keywords :
distributed feedback lasers; elemental semiconductors; germanium; infrared sources; laser modes; laser stability; laser tuning; semiconductor lasers; spectral line breadth; 120 K; 41 mW; Ge; Ge distributed-feedback grating; distributed-feedback interband cascade lasers; sidemode suppression ratio; single-mode output power; wavelength tuning; Chemical lasers; Geometrical optics; Gratings; Laser tuning; Optical design; Optical superlattices; Power generation; Quantum cascade lasers; Semiconductor lasers; Waveguide lasers; Distributed-feedback (DFB) laser; interband cascade laser (ICL); midinfrared laser; semiconductor laser;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.889990
