Can any design support an effective nanostructure lasing for a few THz?

L. D. Shvartsman; B. Laikhtman

doi:10.1117/12.762282

6 February 2008 Can any design support an effective nanostructure lasing for a few THz?

L. D. Shvartsman, B. Laikhtman

Proceedings Volume 6893, Terahertz Technology and Applications; 689304 (2008) https://doi.org/10.1117/12.762282
Event: Integrated Optoelectronic Devices 2008, 2008, San Jose, California, United States

Abstract

We present here a bird eye view on the basic physical factors limiting the efficiency of nanostructure-based THz lasing. The origin of these limitations is the contradiction between the requirements of THz gaps, high radiative matrix element value, and selective depopulation. Various ways were suggested to go out of these limitations. They include: sophisticated nanostructure layout, the usage of QCLs, and switch to bipolar THz lasing. We present the results of detailed density matrix based calculations comparing these approaches. In theory InAs-GaSb bipolar THz lasers are the most promising.

Citation Download Citation

L. D. Shvartsman and B. Laikhtman "Can any design support an effective nanostructure lasing for a few THz?", Proc. SPIE 6893, Terahertz Technology and Applications, 689304 (6 February 2008); https://doi.org/10.1117/12.762282

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