Filamentation and linewidth enhancement factor In InGaAs quantum dot lasers

Summary form only given. Quantum dot lasers may offer advantages for high power output. Results have shown that they can exhibit very low linewidth enhancement factors, which should result in filament free operation. In this work we have experimentally examined the degree of filamentation exhibited in broad area lasers for a variety of InGaAs quantum dot structures emitting in the 1 /spl mu/m band and compared the results with those for quantum well devices operating at the same wavelength. We also determined the linewidth enhancement factor for these structures using a combination of measurements of the cavity Fabry-Perot modes and the multi-section gain technique.

[1]  G. Abstreiter,et al.  Carrier capture into InAs/GaAs quantum dots via multiple optical phonon emission , 2001 .

[2]  Michel Calligaro,et al.  High-performance 980 nm quantum dot lasers for high-power applications , 2001 .

[3]  A. Stintz,et al.  Gain and linewidth enhancement factor in InAs quantum-dot laser diodes , 1999, IEEE Photonics Technology Letters.

[4]  Peter Blood,et al.  Optical mode loss and gain of multiple-layer quantum-dot lasers , 2001 .

[5]  Peter Michael Smowton,et al.  Modal gain and internal optical mode loss of a quantum dot laser , 2000 .

[6]  Dieter Bimberg,et al.  High-power quantum-dot lasers at 1100 nm , 2000 .

[7]  W. Chow,et al.  Anomalous carrier-induced dispersion in quantum-dot active media , 2002 .

[8]  Nikolai N. Ledentsov,et al.  3.9 W CW power from sub-monolayer quantum dot diode laser , 1999 .

[9]  W. W. Chow,et al.  Filamentation in conventional double heterostructure and quantum well semiconductor lasers , 1988 .

[10]  Self-stabilized nonlinear lateral modes of broad area lasers , 1987 .

[11]  A. R. Kovsh,et al.  Progress in Quantum Dot Lasers: 1100 nm, 1300 nm, and High Power Applications , 2000 .

[12]  Nikolai N. Ledentsov,et al.  InGaAs-GaAs quantum-dot lasers , 1997 .

[13]  Stephan W Koch,et al.  Many-body effects in the gain spectra of highly excited quantum-dot lasers , 2001 .

[14]  Jerome V. Moloney,et al.  Toward filament-free semiconductor lasers , 2000, Photonics West - Optoelectronic Materials and Devices.