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A split-nanobeam optomechanical crystal cavity is proposed. By adjusting the split width, an ultra-small effective motion mass as small as 5.2fg is realized with a high mechanical frequency of 7.55GHz.
We experimentally realized on-chip deformed microcavities supporting both highly unidirectional emission and ultrahigh Q factors exceeding 108. This type of microcavity holds potential in ultralow-threshold laser and sensitive nanoparticle detection.
A “cobweb” structure is demonstrated to serve as the gratings for the emission of optical vortices, based on a microring cavity. The scattered optical vortices with topological charges of −4 ∼ 4 were experimentally obtained.
We experimentally realized on-chip deformed microcavities supporting both highly unidirectional emission and ultrahigh Q factors exceeding 108. This type of microcavity holds potential in ultralow-threshold laser and sensitive nanoparticle detection.
An optomechanical crystal nanobeam cavity with high optomechanical coupling rate is proposed and fabricated. Only by adjusting the radius of the air holes, the cavity realizes an optomechanical coupling rate as high as 1.24 MHz.
A hetero optomechanical crystal nanobeam cavity with high mechanical frequency of 5.88 GHz is proposed. By enhancing the overlap between optical and strain field, an optomechanical coupling rate as high as 1.31 MHz is achieved.
A photonic crystal nanobeam cavity with stagger holes in InP/InGaAsP/InP heterostructure is proposed for ultrafast directly modulated nano-light-emitting diodes (nanoLEDs). With stagger holes, the quality factor can be engineered in the range of while keeping a small mode volume . As a result, the modulation speed of nanoLEDs can be dramatically improved by a small...
We report experimentally the chaos-assisted excitation of high-Q whispering-gallery modes in a deformed microcavity by a sub-wavelength fiber taper. This chaos-mediated coupling combines the advantages of fiber taper and free-space coupling.
We observe Fano resonance in a single microresonator, in which two modes are excited simultaneously through a fiber taper. Our analysis reveals that the Fano resonance originates from an indirect-coupling of two originally orthogonal modes.
This paper presents a novel dual-mode filter with asymmetric frequency response making use of square loop resonator DGS. Unlike the conventional dual-mode structure, the square ring resonator with a square patch attached at the corner is placed on the bottom plane, which is coplanar with the defected ground. Two T-shaped orthogonal feed lines are arranged on the top plane, which have an overlapped...
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