title: Comparison of raised-microdisk whispering-gallery-mode characterization techniques.
abstract: We compare the two prevailing raised-microdisk whispering-gallery-mode (WGM) characterization techniques, one based on coupling emission to a tapered fiber and the other based on collecting emission in the far field. We applied both techniques to study WGMs in Si nanocrystal raised microdisks and observed dramatically different behavior. We explain this difference in terms of the radiative bending loss on which the far-field collection technique relies and discuss the regimes of operation in which each technique is appropriate.
authors.affiliation: Department of Electrical and Computer Engineering, University of Delaware, Newark, Delaware 19716, USA. redding@udel.edu
authors.forename: Brandon
authors.initials: B
authors.lastname: Redding
authors.forename: Elton
authors.initials: E
authors.lastname: Marchena
authors.forename: Tim
authors.initials: T
authors.lastname: Creazzo
authors.forename: Shouyuan
authors.initials: S
authors.lastname: Shi
authors.forename: Dennis W
authors.initials: DW
authors.lastname: Prather