High quality factor photonic crystal nanobeam cavities
TL;DR: In this paper, the authors investigated the design, fabrication, and experimental characterization of high quality factor photonic crystal nanobeam cavities in silicon using a five-hole tapered one-dimensional photonic mirror and precise control of the cavity length.
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Abstract: We investigate the design, fabrication, and experimental characterization of high quality factor photonic crystal nanobeam cavities in silicon. Using a five-hole tapered one-dimensional photonic crystal mirror and precise control of the cavity length, we designed cavities with theoretical quality factors as high as 1.4×107. By detecting the cross-polarized resonantly scattered light from a normally incident laser beam, we measure a quality factor of nearly 7.5×105. The effect of cavity size on mode frequency and quality factor was simulated and then verified experimentally.
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References
Ultra high quality factor one dimensional photonic crystal/photonic wire micro-cavities in silicon-on-insulator (SOI)
TL;DR: Experimental results on photonic crystal/photonic wire micro-cavity structures that demonstrate further enhancement of the quality-factor (Q-factor)--up to approximately 149,000--in the fibre telecommunications wavelength range are presented.
Ultrahigh-Q Nanocavity with 1D Photonic Gap
TL;DR: It is numerically demonstrated that ultrahigh-Q (2.0x10(8)) and wavelength-sized (V(eff) approximately 1.4(lambda/n)3) cavities can be achieved by employing only 1D periodicity.
Controlling the resonance of a photonic crystal microcavity by a near-field probe.
TL;DR: It is demonstrated theoretically that the resonance frequencies of high-Q microcavities in two-dimensional photonic crystal membranes can be tuned over a wide range by introducing a subwavelength dielectric tip into the cavity mode by varying the lateral and vertical positions of the tip.
Gallium Phosphide Photonic Crystal Nanocavities in the Visible
TL;DR: In this article, a high refractive index (n>3.2) gallium phosphide membrane was used to construct the visible crystal nanocavities at visible wavelengths, and the cavities were probed via a cross-polarized reflectivity measurement.
Design of a silicon nitride photonic crystal nanocavity with a Quality factor of one million for coupling to a diamond nanocrystal.
TL;DR: An analysis of the figures of merit for cavity quantum electrodynamics reveals that strong coupling between an embedded diamond nitrogen-vacancy center and the cavity mode is achievable for a range of cavity dimensions.