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The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

Published on: December 5, 2025

Modulation transfer function for infrared reflectarrays.

Jose Antonio Gómez-Pedrero¹, James Ginn, Javier Alda

¹University Complutense of Madrid, School of Optics, Madrid, Spain. jagomezp@fis.ucm.es

|September 28, 2011

Summary

Large aperture reflectarrays offer high-quality imaging, performing near the diffraction limit. Chromatic aberrations result in strong wavelength selectivity for these optical elements.

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The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

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Open Source High Content Analysis Utilizing Automated Fluorescence Lifetime Imaging Microscopy

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Area of Science:

Optics
Optical Engineering
Metamaterials

Background:

Optical reflectarrays are meta-surfaces used for beam manipulation.
Image quality is crucial for reflectarray applications.

Purpose of the Study:

Analyze reflectarray image quality based on F/#, polarization, and wavelength.
Characterize chromatic aberrations and wavelength selectivity.

Main Methods:

Calculated monochromatic and polychromatic modulation transfer functions (MTFs).
Evaluated performance across varying F/#, polarization, and wavelengths.

Main Results:

Large aperture multilevel reflectarrays approach diffraction-limited performance.
Significant chromatic aberrations were observed, leading to high wavelength selectivity.

Conclusions:

Reflectarrays can achieve excellent imaging performance.
Chromatic aberrations are a key factor in their spectral response and application suitability.