Wavelength variation of laser emission along the entire rim of slightly deformed microdroplets

Enhanced coupling to microsphere resonances with optical fibers

“…To rule out the ellipticity of the microparticle, we also observed the plane-wave scattering spectra (not shown) at a scattering angle of 45°from the microparticle and confirmed that the microparticle was indeed spherical, since the MDR's corresponding to different great-circle trajectories occurred at the same wavelength. 14 Comparing the spectra shown in Fig. 3 with the scattering spectra obtained with a plane wave, we noticed several features: (1) There is a large background intensity, which cannot be explained by the light scattering that results from OFC surface imperfections; and (2) The MDR's have nearly Lorentzian line shapes as opposed to the Fano line shapes 15 of the plane-wave scattering spectra.…”

Development of a deformation-tunable quadrupolar microcavity

“…The wavelength shifts due to the change in the perimeter of a great circle of a micro droplet under volumepreserving shape deformation have been investigated before [21,22]. In that case, the observed wavelength shift was mostly due to the size increase of the great circle under consideration and thus did not give definitive information on the shape deformation itself for the great circle.…”

United States Air Force Summer Research Program -- 1993 Summer Research Program Final Reports. Volume 15. Wright Laboratory

“…Measurements of :n-shaped image can permit the determination of the shape distortion amplitude. 19 Third, the emission from any n-mode MDR is progressively shifted to shorter wavelengths as the droplets travel further downstream from the orifice plate. The laser emission shift to shorter wavelengths corresponds to a decrease in droplet size.…”

“…[MI (a ý =I} (19) where (K] is the extended element stiffness matrix and [MI is the element mass matrix. 13 The stiffness matrix is integrated numerically by Gauss-quadrature integration method.1…”

“…(19), 4O(T,T) are the boundary conditions and I is the identity matrix. The time, Tr can be selected based on when the states, x(*r), are known(usually the states can be found at time, T = 0).…”