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The interplay between gain and loss in optical metamaterials can lead to novel device functionalities. Here we demonstrate a single-mode laser with unique cavity mode manipulation capability based on thresholdless parity-time symmetry breaking.
When transition metal dichalcogenide (TMDC) crystals are thinned to monolayers, they undergo an indirect to direct bandgap transition, enabling rich electroluminescent and photoluminescent behaviors. Coupling and integration of TMDC monolayers with photonic crystal and distributed Bragg reflector microcavities have recently been reported with Purcell enhancement of spontaneous emission and strong...
We propose a technique to phase-match Josephson-junction traveling wave parametric amplifiers to achieve high gain (over twenty decibels) over a broad bandwidth (multiple GHz) for applications such as the multiplexed readout of quantum coherent circuits.
Exploration of the interplay between gain and loss in optical materials can lead to novel device functionalities. Here we demonstrated a single-mode laser based on parity-time symmetry breaking.
We demonstrate truly deep sub-wavelength nanoscale metamaterial optical nanocavities with anomalous scaling laws, by incorporating indefinite metamaterials with hyperbolic dispersion. Cavities with sizes down to ∼ λ/20 and high effective refractive index of 17.4 are realized.
We realize three-dimensional nanoscale optical cavities with anomalous scaling laws, by incorporating indefinite metamaterial with hyperbolic dispersion. Optical cavities with sizes down to ∼ λ/12 and high refractive index of 17.4 are demonstrated.
The effect of intracavity aberrated perturbation on output mode properties of a confocal unstable resonator is been experimentally researched by adopting H-S wavefront sensor and Zernike modal wavefront reconstruction. By processing the image of beam facula matrix, wavefront phase properties, Zernike aberrations, PV and RMS error, distribution of circle energy can all be acquired, so beam phase distribution...
The effect of intracavity aberrated perturbation on output mode structure properties of passive confocal unstable resonator is been experimentally researched by adopting Hartmann-Shack (H-S) wavefront sensor and Zernike modal wavefront reconstruction on the basis of numerical simulation. The results show that intracavity tilt perturbation notablely affects outcoupled intensity distribution, and will...
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