Title :
Single-longitudinal-mode emission from interband cascade DFB laser with a grating fabricated by interferometric lithography
Author :
Bradshaw, J.L. ; Bruno, J.D. ; Pham, J.T. ; Wortman, D.E. ; Zhang, S. ; Brueck, S.R.J.
Author_Institution :
Maxion Technol. Inc., Hyattsville, MD, USA
Abstract :
A distributed-feedback, type-II interband cascade laser is demonstrated in pulsed mode, emitting near 3.145 μm at temperatures between 50 and 80 K. Feedback is provided by a surface-etched grating formed using interferometric lithography. Between 50 and 80 K, the device´s single longitudinal mode red-shifts with temperature at ∼0.1 nm/K. At 70 K and 190 mA of pulsed injection current, side-mode suppression exceeds 30 dB. The characteristics of related Fabry-Perot IC lasers are also described and contrasted with those of the distributed feedback device.
Keywords :
Fabry-Perot resonators; diffraction gratings; distributed feedback lasers; etching; laser feedback; laser modes; light interferometry; optical fabrication; photolithography; quantum well lasers; red shift; 190 mA; 3.145 mum; 50 to 80 K; DFB laser; Fabry-Perot IC lasers; device fabrication; distributed feedback laser; interband cascade laser; interferometric lithography; laser feedback; pulsed injection current; pulsed mode; red shift; side-mode suppression; single-longitudinal mode emission; surface-etched grating; type-II laser;
Journal_Title :
Optoelectronics, IEE Proceedings -
DOI :
10.1049/ip-opt:20030613
