Abstract
Contrary to an unphysical conclusion obtained by Alavikia et al. [J. Opt. Soc. Am. A 32, 522 (2015)], the imaginary parts of both the permittivity and the permeability of any linear, homogeneous, passive, spatially local, dielectric-magnetic material are always positive, independent of the signs of their real parts.
Original language | English (US) |
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Pages (from-to) | 1564-1565 |
Number of pages | 2 |
Journal | Journal of the Optical Society of America A: Optics and Image Science, and Vision |
Volume | 32 |
Issue number | 8 |
DOIs | |
State | Published - 2015 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Computer Vision and Pattern Recognition