Related Experiment Video
Updated: Jun 5, 2025

Optical Scatter Microscopy Based on Two-Dimensional Gabor Filters
Published on: June 2, 2010
Optical filters made from random metasurfaces using Bayesian optimization
Parker R Wray1, Elijah G Paul2, Harry A Atwater2
1Department of Electrical Engineering, California Institute of Technology, Pasadena, CA 91125, USA.
Abstract:
We theoretically investigate the ability to design optical filters from a single material and a single layer of randomly dispersed resonant dielectric particles, defining a random metasurface. Using a Bayesian and generalized Mie inverse-design approach, we design particle radii distributions that give rise to longpass, shortpass, bandpass, and bandstop spectral bands in the infrared. The optical response is shown to be directly related to electric and magnetic multipole scattering of the constituent particles and their near field coupling. We discuss the effect of the particle size distribution and particle-particle coupling interactions on filter design in random systems lacking long-range order.
Related Concept Videos
Randomized Experiments
Simple randomization
Simple...
Passive Filters
Low-Pass Filters
Low-pass filters are designed to transmit signals with frequencies lower than the cutoff frequency, ωc, and attenuate those above it. The cutoff...
Maxwell-Boltzmann Distribution: Problem Solving
This distribution function f(v) is defined by saying that the expected number N (v1,v2) of particles with speeds between v1 and v2 is given by
Random Sampling Method
Propagation of Uncertainty from Random Error
Deconvolution
Deconvolution involves several mathematical techniques to derive the impulse response. One common approach is polynomial division. In this method, the input and output sequences are treated as coefficients of...

