Low-threshold lasing action in photonic crystal slabs enabled by Fano resonances
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Soljacic_Low-threshold.pdf
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Author(s)
Chua, Song-Liang
Chong, Yidong
Stone, A. Douglas
Soljacic, Marin
Bravo-Abad, Jorge
Date Issued
January 2011
Journal
Optics Express
Publisher
Optical Society of America
Citation
Chua, Song-Liang et al. “Low-threshold Lasing Action in Photonic Crystal Slabs Enabled by Fano Resonances.” Optics Express 19.2 (2011): 1539. © 2011 Optical Society of America
Version
Final published version
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.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Department of Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1364/OE.19.001539
