Air-Holes Radius Change Effects and Structure Transitions in the Linear Photonic Crystal Nanocavities
American Journal of Optics and Photonics
Volume 1, Issue 3, June 2013, Pages: 11-16
Received: May 22, 2013; Published: Jun. 20, 2013
Views 3547      Downloads 172
Ahmadreza Daraei, Dept of Physics, Faculty of Science, University of Sistan and Baluchestan, Zahedan, Iran
Foroogh Khozeymeh Sarbisheh, Dept of Physics, Faculty of Science, University of Sistan and Baluchestan, Zahedan, Iran
Article Tools
Follow on us
The strong localization of electromagnetic modes in high-Q/Vm (quality factor/modal volume) photonic crystal (PhC) nanocavities (NCs) makes them strong candidates for enhanced optical nonlinear effects, such as cavity quantum electrodynamics (QED) phenomena. These applications require precise control of cavity resonances mode. The cavity resonance is strongly depending on the lattice constant, a, and the air-hole radius, r, of photonic crystals. Slight modifications in the geometries of the photonic crystals will result in large differences in the dispersion characteristics. In this paper, by using BandSOLVE and FullWAVE software of RSoft Photonics CAD package, at first L1, L3 and L5 NCs in a semiconductor slab have been simulated in a hexagonal lattice of air-holes (radius r) with lattice constant a=270 nm and constant fill factor (r/a=0.29). Then, with radius reduction of the two ends air-holes (TEA-H), different confinement characteristics of photonic modes such as: numbers of confined modes, wavelengths, quality factors and two dimensional field profiles have been investigated. Calculations have shown that when radius of (TEA-H) in the linear NCs with n missing air-holes in a line, Ln, reaches to nearly zero value, transition in the structure to the L(n+2) NCs, with roughly different qualities has been observed. Also, improvement in the quality factors of higher-order modes will be achieved. Understanding of the higher-order modes and two dimensional field profiles of the confined photonic modes are useful for the design of more efficient nano-lasers and observation of the cavity QED effects.
Photonic Crystals, L1-L3-L5 Linear Nanocavities, Confined Modes, Field Profiles, Quality Factors
To cite this article
Ahmadreza Daraei, Foroogh Khozeymeh Sarbisheh, Air-Holes Radius Change Effects and Structure Transitions in the Linear Photonic Crystal Nanocavities, American Journal of Optics and Photonics. Vol. 1, No. 3, 2013, pp. 11-16. doi: 10.11648/j.ajop.20130103.11
J. D. Joannopoulos, S. G. Johnson, J. N. Winn, R. D. Meade, "Photonic Crystals - Molding the Flow of Light", Princeton University Press, Princeton, New Jersey, 2nd ed, (2008).
K. Sakada, "Optical Properties of Photonic Crystals", Springer, 2nd ed, (2004).
Y. Akahane, T. Asano, B. S. Song, S. Noda, "High-Q photonic nanocavity in two-dimensional photonic crystal", Nature 425, 944 (2003).
K. J. Vahala, "Optical Microcavities", Nature 424, 839 (2003).
T. Yoshie, A. Scherer, J. Hendrickson, G. Khitrova, H. M. Gibbs, G. Rupper, C. Ell, O. B. Shchekin, D. G. Deppe, "Vacuum Rabi splitting with a single quantum dot in a photonic crystal nanocavity", Nature 432, 200 (2004).
S. Strauf, K. Hennessy, M. T. Rakher, Y. S. Choi, A. Badolato, L. C. Andreani, E. L. Hu, P. M. Petroff, and D. Bouwmeester, "Self-tuned quantum dot gain in photonic crystal lasers", Phys. Rev. Lett. 96, 127104 (2006).
W-H. Chang, W-Y. Chen, H-S. Chang, T-P. Hsieh, J-I. Chyi, and T-M. Hsu, "Efficient single-photon sources based on low-density quantum dots in photonic-crystal nanocavities", Phys. Rev. Lett. 96, 117401 (2006).
M. Notomi, A. Shinya, S. Mitsugi, G. Kira, E. Kuramochi, and T. Tanabe, "Optical bistable switching action of Si high-Q photonic-crystal nanocavities", Optics Express 13, 2678 (2005).
E. M. Purcell, "Spontaneous emission probabilities at radio frequencies", Phys. Rev. 69, 681 (1946).
D. Englund, I. Fushman and J. Vučković, "General recipe for designing photonic crystal cavities", Optics Express 13, 5961 (2005).
S. Ogawa, M. Imada, S. Yoshimoto, M. Okano, S. Noda, "Control of Light Emission by 3D Photonic Crystals", Science 305, 227 (2004).
T. F. Krauss, R. M. De La Rue, S. Brand, "Two-dimensional photonic-bandgap structures operating at near-infrared wavelengths", Nature 383, 699 (1996).
Y. Akahane, T. Asano, B. S. Song, and S. Noda, "Investigation of high-Q channel drop filters using donor-type defects in two-dimensional photonic crystal slabs", Appl. Phys. Lett. 83, 1512 (2003).
S. Noda, A. Chutinan, M. Imada, "Trapping and emission of photons by a single defect in a photonic bandgap structure", Nature 407, 608 (2000).
Science Publishing Group
1 Rockefeller Plaza,
10th and 11th Floors,
New York, NY 10020
Tel: (001)347-983-5186