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Title: Low-threshold lasing action in photonic crystal slabs enabled by Fano resonances
Authors: Chua, Song-Liang
Chong, Yidong
Stone, A. Douglas
Soljačić, Marin
Bravo-Abad, Jorge
Keywords: DRNTU::Science::Physics::Optics and light
Issue Date: 2011
Source: Chua, S. L., Chong, Y., Stone, A. D., Soljačić, M., & Bravo-Abad, J. (2011). Low-threshold lasing action in photonic crystal slabs enabled by Fano resonances. Optics express, 19(2), 1539-1562.
Series/Report no.: Optics express
Abstract: We present a theoretical analysis of lasing action in photonic crystal surface-emitting lasers (PCSELs). The semiclassical laser equations for such structures are simulated with three different theoretical techniques: exact finite-difference time-domain calculations, an steady-state ab-initio laser theory and a semi-analytical coupled-mode formalism. Our simulations show that, for an exemplary four-level gain model, the excitation of dark Fano resonances featuring arbitrarily large quality factors can lead to a significant reduction of the lasing threshold of PCSELs with respect to conventional vertical-cavity surface-emitting lasers. Our calculations also suggest that at the onset of lasing action, most of the laser power generated by finite-size PCSELs is emitted in the photonic crystal plane rather than the vertical direction. In addition to their fundamental interest, these findings may affect further engineering of active devices based on photonic crystal slabs.
ISSN: 1094-4087
DOI: 10.1364/OE.19.001539
Schools: School of Physical and Mathematical Sciences 
Rights: © 2011 Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint (preprint) with permission of Optical Society of America. The paper can be found at the following official DOI:  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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