Title :
1.55-μm bipolar cascade segmented ridge lasers
Author :
Getty, Jonathan T. ; Johansson, Leif A. ; Skogen, Erik J. ; Coldren, Larry A.
Author_Institution :
Electr. & Comput. Eng. Dept., Univ. of California, Santa Barbara, CA, USA
Abstract :
Scalable bipolar cascade lasers are achieved by electrically segmenting an InP ridge laser, and then series-connecting the segments. Lasers with up to 12 stages are demonstrated with record 390% continuous wave differential efficiency, and very low threshold currents. Three-stage lasers with 50-Ω input impedance and over 100% differential efficiency are modulated with 2.5-GB/s digital data, and have 5-GHz analog modulation bandwidth. Noise and distortion properties are at least as good as single-stage control lasers.
Keywords :
III-V semiconductors; electro-optical modulation; impedance matching; indium compounds; integrated optoelectronics; ion implantation; laser noise; optical distortion; quantum well lasers; ridge waveguides; semiconductor optical amplifiers; waveguide lasers; 1.55 mum; 390 percent; 5 GHz; 50 ohmm; InP; InP ridge laser; S-GHz analog modulation bandwidth; bipolar cascade segmented ridge lasers; continuous wave differential efficiency; digital data; distortion properties; electrical segmenting; impedance matching; integrated optoelectronics; ion implantation; noise properties; optical amplifiers; quantum well intermixing; scalable bipolar cascade lasers; semiconductor lasers; series-connected segments; three-stage lasers; threshold currents; Current density; Etching; Helium; Impedance; Laser modes; Optical scattering; Optical waveguides; Quantum cascade lasers; Threshold current; Voltage;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2003.819482
