Abstract
Space-variant partially polarized thermal emission is investigated. We show that by coupling surface phonon-polaritons to a propagating field, large anisotropy of the emissivity is obtained within a narrow spectral range. We experimentally demonstrate this effect by fabricating a space-variant subwavelength grating on a SiO2 substrate to encrypt an image in the polarization state of a thermal radiation field.
Original language | English |
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Pages (from-to) | 3195-3197 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 30 |
Issue number | 23 |
DOIs | |
State | Published - 1 Dec 2005 |
Externally published | Yes |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics