The Effects Of Fabricational Variations On Quantum Wire Laser Gain Spectra And Performance

Hal Zarem; Kerry Vahala; Amnon Yariv

doi:10.1117/12.976370

22 June 1989 The Effects Of Fabricational Variations On Quantum Wire Laser Gain Spectra And Performance

Hal Zarem, Kerry Vahala, Amnon Yariv

Proceedings Volume 1043, Laser Diode Technology and Applications; (1989) https://doi.org/10.1117/12.976370
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

Abstract

The effects of fabricational variations on the gain spectra of quantum wires are calculated within the limits of first order perturbation theory. Gain spectra and density of states for 50A radius and 150A radius cylindrical quantum wires are calculated and plotted for several different fabrication tolerances. The wave functions for a finite, cylindrical potential are calculated and a quasi-critical radius, below which the carriers are weakly confined by the potential, is established. This sets a lower limit on quantum wire size. Upper limits on the size of quantum wells, quantum wires, and quantum boxes are also discussed. The threshold current and differential gain of quantum wire lasers and quantum wire array lasers are calculated. These calculations indicate a possible reduction in threshold current of one to two orders of magnitude as compared to the best quantum well lasers to date.

Citation Download Citation

Hal Zarem, Kerry Vahala, and Amnon Yariv "The Effects Of Fabricational Variations On Quantum Wire Laser Gain Spectra And Performance", Proc. SPIE 1043, Laser Diode Technology and Applications, (22 June 1989); https://doi.org/10.1117/12.976370

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