title: Rotating optical microcavities with broken chiral symmetry.
abstract: We demonstrate in open microcavities with broken chiral symmetry that quasidegenerate pairs of copropagating-wave resonances are transformed by rotation to counterpropagating ones, leading to a striking change of emission directions. The rotation-induced relative change in output intensity increases exponentially with cavity size, in contrast to the linear scaling of the Sagnac effect. By tuning the degree of spatial chirality with cavity shape, we are able to maximize the emission sensitivity to rotation without spoiling the quality factor.
authors.affiliation: Department of Applied Physics, Yale University, New Haven, Connecticut 06520, USA.
authors.forename: Raktim
authors.initials: R
authors.lastname: Sarma
authors.affiliation: Department of Engineering Science and Physics, College of Staten Island, CUNY, Staten Island, New York 10314, USA and The Graduate Center, CUNY, New York, New York 10016, USA.
authors.forename: Li
authors.initials: L
authors.lastname: Ge
authors.affiliation: Institut für Theoretische Physik, Universität Magdeburg, Magdeburg, Postfach 4120, Germany.
authors.forename: Jan
authors.initials: J
authors.lastname: Wiersig
authors.affiliation: Department of Applied Physics, Yale University, New Haven, Connecticut 06520, USA.
authors.forename: Hui
authors.initials: H
authors.lastname: Cao