Abstract
Optical transmission measurements were made on 98% porosity silica aerogel samples under various degrees of uniaxial strain. Uniaxially compressed aerogels exhibit large birefringence, proportional to the amount of compression, up to the 15% strain studied. The birefringence is mostly reversible and reproducible through multiple compression-decompression cycles. Our study demonstrates that uniaxially strained high porosity aerogels can be used as tunable waveplates in a broad spectral range.
| Original language | English |
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| Pages (from-to) | 10599-10605 |
| Number of pages | 7 |
| Journal | Optics Express |
| Volume | 17 |
| Issue number | 13 |
| DOIs | |
| State | Published - 22 Jun 2009 |