1.
Appl Opt
; 54(18): 5861-5, 2015 Jun 20.
Artigo
em Inglês
| MEDLINE
| ID: mdl-26193040
RESUMO
We present an experimental apparatus that allows microsecond-resolved ellipsometric and absorption measurements. The apparatus is based on an optical cavity containing a Dove prism, in which light undergoes total internal reflection (TIR), while the data acquisition is based on software defined radio technology and custom-built drivers. We demonstrate the ability to sense rapid variations in the refractive index above the TIR interface for arbitrarily long times with a temporal resolution of at least 2 µs.