Journal ArticleDOI
The smallest possible whispering-gallery-like mode in the square lattice photonic-crystal slab single-defect cavity
TLDR
In this paper, the smallest possible whispering-gallery-like mode (WGM) formed in a free-standing square-lattice photonic-crystal slab single-defect cavity is studied by using the three-dimensional finite-difference time-domain method.Abstract:
The smallest possible whispering-gallery-like mode (WGM) formed in a free-standing square-lattice photonic-crystal slab single-defect cavity is studied by using the three-dimensional finite-difference time-domain method. The WGM is nondegenerate and the only existing resonant mode in the transverse electric mode bandgap of the square lattice. High-quality factors are achieved from this mode by suppressing both the in-plane and the out-of-plane optical losses. By optimizing the structural parameters, a total quality factor of 18 000 and a vertical quality factor of 40 000 are obtained from the WGM. The quality factor does not decrease significantly in the presence of a current flow path at the center of the cavity due to the null of electromagnetic energy at the cavity center, which means this mode is advantageous to achieve electrically pumped photonic-crystal lasers. In addition, by combining the high-quality factor with wavelength-size small-mode volume, very high Purcell factors >8000 are achieved, the largest value ever reported. The WGM of the square-lattice single-defect cavity is promising for both cavity quantum electrodynamics research and the low-threshold microcavity laser.read more
Citations
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High-quality-factor and small-mode-volume hexapole modes in photonic-crystal-slab nanocavities
TL;DR: In this paper, the authors investigated the hexapole mode of photonic-crystal-slab modified triangular single-defect cavity structures as a good candidate for a high-quality factor (Q) and small-mode volume (V) resonant mode.
Journal ArticleDOI
Tuning photonic crystal nanocavity modes by wet chemical digital etching
K. Hennessy,Antonio Badolato,Adele C. Tamboli,Pierre Petroff,E. L. Hu,Mete Atatüre,Jan Dreiser,Atac Imamoglu +7 more
TL;DR: In this article, a wet chemical digital etching technique was developed for tuning the resonant wavelengths of photonic crystal nanocavities over a wide range of 80nm in precise 2-3nm steps while preserving high cavity quality factors.
Journal ArticleDOI
Single quantum dot nanolaser
Stefan Strauf,Frank Jahnke +1 more
TL;DR: In this article, the authors review recent theoretical and experimental progress on nanolasers with a focus on the emission properties of devices operating with a few or even an individual semiconductor quantum dot as a gain medium.
Journal ArticleDOI
High quality-factor whispering-gallery mode in the photonic crystal hexagonal disk cavity.
TL;DR: This work studies whispering-gallery-like modes in photonic crystal air-bridge slab micro-cavities having H2 defects using finite-difference time-domain calculations and investigates the effect of a dielectric circular post located around the center of the H2 cavity.
Journal ArticleDOI
Positioning photonic crystal cavities to single InAs quantum dots
TL;DR: In this paper, the optical properties of planar photonic crystal cavities formed by removing a single hole from a two-dimensional square lattice of air holes etched through a thin GaAs slab were investigated.
References
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Inhibited Spontaneous Emission in Solid-State Physics and Electronics
TL;DR: If a three-dimensionally periodic dielectric structure has an electromagnetic band gap which overlaps the electronic band edge, then spontaneous emission can be rigorously forbidden.
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Resonance Absorption by Nuclear Magnetic Moments in a Solid
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Two-Dimensional Photonic Band-Gap Defect Mode Laser
TL;DR: A laser cavity formed from a single defect in a two-dimensional photonic crystal is demonstrated and pulsed lasing action has been observed at a wavelength of 1.5 micrometers from optically pumped devices with a substrate temperature of 143 kelvin.