Abstract
Generalized spectroscopic ellipsometry is used to determine the form-induced birefringence and monoclinic optical constants of chromium columnar thin films. The slanted nanocolumns were deposited by glancing angle deposition under 85° incidence and are tilted from the surface normal. Dichroism measured for wavelengths from 400 to 1000 nm renders the Cr nanocolumns monoclinic absorbing crystals with c axis along the nanocolumns axis, b axis parallel to the film interface, and 74.8° monoclinic angle between a and c axes. The columnar thin film reveals anomalous optical dispersion, extreme birefringence, and strong dichroism and differs entirely from bulk chromium.
Original language | English (US) |
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Pages (from-to) | 992-994 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 34 |
Issue number | 7 |
DOIs | |
State | Published - Apr 1 2009 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics