title: Whispering gallery mode sensing with a dual frequency comb probe.
abstract: Silica microspheres are probed with a dual comb interferometry setup. The impulse responses of these microresonators are measured with a temporal resolution smaller than 400 fs over more than 200 ps. The amplitudes and phases of the impulse responses are interpreted as providing sensing information. The more familiar transmission spectra corresponding to the measured impulse responses are also calculated and shown. Sensing is demonstrated by varying the concentration of isopropanol in de-ionized water surrounding the microsphere and by binding bovine serum albumin on the silanized microsphere surface.
authors.affiliation: Centre d’optique, photonique et laser (COPL), Université Laval, 2375 rue de la Terrasse, Québec, G1V0A6, Canada.
authors.forename: Vincent
authors.initials: V
authors.lastname: Michaud-Belleau
authors.forename: Julien
authors.initials: J
authors.lastname: Roy
authors.forename: Simon
authors.initials: S
authors.lastname: Potvin
authors.forename: Jean-Raphaël
authors.initials: JR
authors.lastname: Carrier
authors.forename: Louis-Simon
authors.initials: LS
authors.lastname: Verret
authors.forename: Maxime
authors.initials: M
authors.lastname: Charlebois
authors.forename: Jérôme
authors.initials: J
authors.lastname: Genest
authors.forename: Claudine
authors.initials: C
authors.lastname: Nì Allen
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation*; D008863:Microspheres; D012822:Silicon Dioxide / Q000737:chemistry*; D020349:Surface Plasmon Resonance / Q000295:instrumentation*; D014159:Transducers
chemical_list: D012822:Silicon Dioxide