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Updated: Oct 22, 2025

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
Method of transmission filters to measure emission spectra in strongly scattering media
Belén Torrado1, Alexander Dvornikov1, Enrico Gratton1
1Laboratory for Fluorescence Dynamics, Biomedical Engineering Department, University of California at Irvine, California 92697, USA.
Abstract:
We describe a method based on a pair of transmission filters placed in the emission path of a microscope to resolve the emission wavelength of every point in an image. The method can be applied to any type of imaging device that provides the light in the wavelength transmission range of the filters. Unique characteristics of the filter approach are that the light does not need to be collimated and the wavelength response does not depend on the scattering of the sample or tissue. The pair of filters are used to produce the spectral phasor of the transmitted light, which is sufficient to perform spectral deconvolution over a broad wavelength range. The method is sensitive enough to distinguish free and protein-bound NADH and can be used in metabolic studies.
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