title: Phase-referenced probe interferometer for biological surface profiling and displacement measurements.
abstract: We present a probe-based, phase-referenced low coherence interferometer in which the reference field is provided by a fiber end reflection. A gradient-index microlens focuses light onto a sample and collects reflected light. We use the probe interferometer to measure surface profiles of the compound eye of a housefly (Musca domestica) and measure nanometer-scale vibrations in a test sample.
authors.affiliation: G. R. Harrison Spectroscopy Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
authors.forename: Christopher
authors.initials: C
authors.lastname: Fang-Yen
authors.forename: Mark C
authors.initials: MC
authors.lastname: Chu
authors.forename: H Sebastian
authors.initials: HS
authors.lastname: Seung
authors.forename: Ramachandra R
authors.initials: RR
authors.lastname: Dasari
authors.forename: Michael S
authors.initials: MS
authors.lastname: Feld
mesh_terms: D001704:Biopolymers / Q000737:chemistry*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation*; D015336:Molecular Probe Techniques / Q000295:instrumentation*; D012031:Refractometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013499:Surface Properties; D014159:Transducers
chemical_list: D001704:Biopolymers