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Proceedings Paper

Difference-harmonic generation in quantum dots
Author(s): Fedir T. Vasko; Eoin P. O'Reilly
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Paper Abstract

We investigate the prospects for difference-harmonic genration due to intersubband transitions in n-doped quantum dots. The third order susceptibility tensor is calculated for flat conic quantum dots, where the lateral size is significantly greater than the height. The energy levels and the dipole matrix elements associated with the intersubband transitions are obtained in the framework of the effective mass approximation, including a simple model for self-consistent screenign in the dots. The spectral dependence of the susceptibility is calculated and the double-resonant enhancement of the response is considered. Numerical estimates of the efficiency of transformation of a two-color near-IR pump indicate that it may be possible to observe a mid-IR output of the order of a millimwatt for the case of a multi-QD-sheet structure placed in the center of a resonator.

Paper Details

Date Published: 27 August 2003
PDF: 9 pages
Proc. SPIE 4876, Opto-Ireland 2002: Optics and Photonics Technologies and Applications, (27 August 2003); doi: 10.1117/12.464261
Show Author Affiliations
Fedir T. Vasko, National Microelectronics Research Ctr. (Ireland)
Eoin P. O'Reilly, National Microelectronics Research Ctr. (Ireland)


Published in SPIE Proceedings Vol. 4876:
Opto-Ireland 2002: Optics and Photonics Technologies and Applications
Vincent Toal; Norman Douglas McMillan; Gerard M. O'Connor; Eon O'Mongain; Austin F. Duke; John F. Donegan; James A. McLaughlin; Brian D. MacCraith; Werner J. Blau, Editor(s)

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