Topic
Optical microcavity
About: Optical microcavity is a research topic. Over the lifetime, 2599 publications have been published within this topic receiving 72125 citations. The topic is also known as: optical microcavities.
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TL;DR: In this article, the authors presented a general method for the /spl beta/ factor calculation in optical microcavities based on the classical model for atomic transitions in a semiconductor active medium, which is used to evolve the electromagnetic fields of the system and calculate the total radiated energy, as well as the energy radiated into the mode of interest.
Abstract: We present a general method for the /spl beta/ factor calculation in optical microcavities. The analysis is based on the classical model for atomic transitions in a semiconductor active medium. The finite-difference time-domain method is used to evolve the electromagnetic fields of the system and calculate the total radiated energy, as well as the energy radiated into the mode of interest. We analyze the microdisk laser and compare our result with the previous theoretical and experimental analyses. We also calculate the /spl beta/ factor of the microcavity based on a two-dimensional (2-D) photonic crystal in an optically thin dielectric slab. From the /spl beta/ calculations, we are able to estimate the coupling to radiation modes in both the microdisk and the 2-D photonic crystal cavity, thereby showing the effectiveness of the photonic crystal in suppressing in-plane radiation modes.
96 citations
TL;DR: In this article, a single photon horn was proposed to generate single photon pulses from an InAs/InP quantum dot at a wavelength of 1.5 µm, which can propagate over 95% photon pulses in InP substrate.
Abstract: We succeeded in efficiently generating single-photon pulses from an InAs/InP quantum dot at a wavelength of 1.5 μm. Our optical structure, named a single photon horn, can propagate over 95% photon pulses in InP substrate. We extracted the photon pulses through an anti-reflection coating on a substrate, and then we injected them into an objective lens. Total extraction efficiency from the quantum dot to the lens reached ∼11%, which was estimated using a photon correlation measurement. Furthermore we directly observed the single-photon pulse width ∼1.6 ns as an exciton lifetime in the quantum dot, which opens up the possibility of operating the single photon horn over 100 MHz.
96 citations
TL;DR: In this article, add-drop filters using racetrack-shaped resonators coupled to straight waveguides across gaps which are larger compared with the conventional microcavity ring resonators are characterized and are determined uniquely by the round-trip loss and the coupling factor of the resonator.
Abstract: We have demonstrated add-drop filters using racetrack-shaped resonators coupled to straight waveguides across gaps which are larger compared with the conventional microcavity ring resonators. The finesse and the maximum transmission are characterized and are shown to be determined uniquely by the round-trip loss and the coupling factor of the resonator.
95 citations
TL;DR: This work provides an easily accessible approach to achieve a single-frequency laser from microcavity lasers operating on whispering-gallery modes and demonstrates further that this single- frequencies can be easily integrated with planar lightwave circuits.
Abstract: Single-mode lasing from a coupled asymmetric microcavity is achieved. By coupling two size mismatched circular microrings to form a coupled asymmetric microcavity, multi-whispering-gallery modes are successfully suppressed and single-frequency laser emission is robustly obtained. Moreover, the laser emits in four directions, and each beam has a divergence of only 6.6 degrees . It is demonstrated further that this single-frequency coupled microcavity laser can be easily integrated with planar lightwave circuits. We provide an easily accessible approach to achieve a single-frequency laser from microcavity lasers operating on whispering-gallery modes.
95 citations
Patent•
20 Jul 1994TL;DR: In this article, a resonant microcavity display with a substrate, a phosphor active region and front and rear reflectors is proposed to create a standing or traveling electromagnetic wave to enhance the efficiency of light transmission.
Abstract: A resonant microcavity display (20) having microcavity with a substrate (25), a phosphor active region (50) and front and rear reflectors (30 and 60). The front and rear reflectors may be spaced to create either a standing or traveling electromagnetic wave to enhance the efficiency of the light transmission.
94 citations