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Aesthetically Enhanced Silica Aerogel Via Incorporation of Laser Etching and Dyes

Aesthetically Enhanced Silica Aerogel Via Incorporation of Laser Etching and Dyes

Published on: March 12, 2021

Aerogel waveplates.

Pradeep Bhupathi¹, Jungseek Hwang, Rodica M Martin

¹Department of Physics, University of Florida, Gainesville, Florida 32611-8440, USA. bhup@phys.ufl.edu

|June 25, 2009

Summary

High-porosity silica aerogels exhibit significant, reversible birefringence when uniaxially strained. This property allows strained aerogels to function as tunable waveplates across a wide spectral range.

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Area of Science:

Materials Science
Optics
Condensed Matter Physics

Background:

Aerogels are highly porous materials with unique optical properties.
Birefringence in materials can be utilized for optical applications.
Tunable optical components are essential for advanced photonic devices.

Purpose of the Study:

To investigate the optical properties of strained silica aerogels.
To determine the relationship between uniaxial strain and birefringence in aerogels.
To explore the potential of aerogels as tunable waveplates.

Main Methods:

Optical transmission measurements were performed on silica aerogel samples.
Samples were subjected to varying degrees of uniaxial strain (up to 15%).
Birefringence was measured as a function of applied strain.

Main Results:

Silica aerogels with 98% porosity showed large, strain-proportional birefringence.
The observed birefringence was largely reversible and reproducible over multiple cycles.
Tunable waveplate behavior was demonstrated in the strained aerogel samples.

Conclusions:

Uniaxially strained high-porosity silica aerogels exhibit significant tunable birefringence.
These materials show promise for applications as tunable waveplates.
The reversible and reproducible nature of the birefringence enhances their practical utility.