title: Microsecond-resolved SDR-based cavity ring down ellipsometry.
abstract: 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.
authors.forename: D
authors.initials: D
authors.lastname: Sofikitis
authors.forename: A K
authors.initials: AK
authors.lastname: Spiliotis
authors.forename: K
authors.initials: K
authors.lastname: Stamataki
authors.forename: G E
authors.initials: GE
authors.lastname: Katsoprinakis
authors.forename: L
authors.initials: L
authors.lastname: Bougas
authors.forename: P C
authors.initials: PC
authors.lastname: Samartzis
authors.forename: B
authors.initials: B
authors.lastname: Loppinet
authors.forename: T P
authors.initials: TP
authors.lastname: Rakitzis
authors.forename: M
authors.initials: M
authors.lastname: Surligas
authors.forename: S
authors.initials: S
authors.lastname: Papadakis