Results 41 to 50 of about 14,300 (240)
Finite-difference time-domain calculation of the spontaneous-emission coupling factor in optical microcavities [PDF]
, 1999 We present a general method for the β factor calculation in optical microcavities. The analysis is based on the classical model for atomic transitions in a semiconductor active medium.
Painter, Oskar +3 more
core +1 more source
Theory of intrinsic propagation losses in topological edge states of planar photonic crystals
Physical Review Research, 2020 Using a semianalytic guided-mode expansion technique, we present theory and analysis of intrinsic propagation losses for topological photonic crystal slab waveguide structures with modified honeycomb lattices of circular or triangular holes.
Erik Sauer +2 more
doaj +1 more source
Room temperature photonic crystal defect lasers at near-infrared wavelengths in InGaAsP [PDF]
, 1999 Room temperature lasing from optically pumped single defects in a two-dimensional (2-D) photonic bandgap (PBG) crystal is demonstrated. The high-Q optical microcavities are formed by etching a triangular array of air holes into a half-wavelength thick ...
A. Husain +6 more
core +2 more sources
Second-Order Nonlinear Mixing of Two Modes in a Planar Photonic Crystal Microcavity
, 2006 Polarization-resolved second-harmonic spectra are obtained from the resonant modes of a two-dimensional planar photonic crystal microcavity patterned in a free-standing InP slab.
Aers, Geof C. +7 more
core +1 more source
Sensitivity enhancement in photonic crystal slab biosensors
Optics Express, 2010 Refractive index sensitivity of guided resonances in photonic crystal slabs is analyzed. We show that modal properties of guided resonances strongly affect spectral sensitivity and quality factors, resulting in substantial enhancement of refractive index sensitivity.
Mohamed, El Beheiry +3 more
openaire +2 more sources
Design and analysis of 1:2 line optical decoder based on linear optics
e-Prime: Advances in Electrical Engineering, Electronics and Energy, 2023 In this paper, a simple design of all-optical photonic crystal (PhC) based 1:2 line decoder has been proposed and its operating principle is based on light beam interference. The designed structure has a hexagonal arrangement of air holes in Si substrate
Kamanashis Goswami +2 more
doaj +1 more source
A Photonic Crystal Slab Laplace Differentiator
, 2017 We introduce an implementation of a Laplace differentiator based on a photonic crystal slab that operates at transmission mode. We show that the Laplace differentiator can be implemented provided that the guided resonances near the $\Gamma$ point exhibit
Fan, Shanhui +4 more
core +1 more source
High Entropy Wide‐Bandgap Borates with Broadband Luminescence and Large Nonlinear Optical properties
Advanced Functional Materials, EarlyView.High‐entropy rare‐earth borates exhibit excellent nonlinear optical and broadband luminescence properties arising from multi‐component doping, chemical disorder, increased configurational entropy, and increased lattice and electronic anharmonicity. This formulation enabled us to obtain a large, environmentally stable single crystal with 3X higher laser‐
Saugata Sarker +14 more
wiley +1 more source
Optical Microcavities Clad by Low-Absorption Electrode Media
IEEE Photonics Journal, 2010 Four types of high-Q optical microcavities - disk, 1-D photonic crystal nanobeam, 2-D photonic crystal slab, and 3-D photonic crystal optical microresonators - clad by low-optical-loss electrode media such as indium tin oxide are designed and evaluated ...
Özlem Senlik +3 more
doaj +1 more source
Sensors, 2023 In recent years, there has been a significant increase in research into silicon-based on-chip sensing. In this paper, a coupled cavity waveguide (CCW) based on a slab photonic crystal structure was designed for use as a label-free biosensor. The photonic
Reyhaneh Jannesari +4 more
doaj +1 more source