Title :
Quality factors and effective-average modal gain or loss in inhomogeneous spherical resonators: application to two-photon absorption
Author :
Chowdhury, Dipakbin Q. ; Hill, Steven C. ; Mazumder, Md Mohiuddin
Author_Institution :
Dept. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA
fDate :
9/1/1993 12:00:00 AM
Abstract :
A method is presented for calculating the quality factors (Q´s) and the effective-average gain and loss coefficients for the modes of a dielectric sphere which has a spatial perturbation of the imaginary part of the refractive index. The method is applicable to gain calculations in spherical lasers, to spatial hole burning and to stimulated Raman scattering in spheres. A time-independent perturbation method is also used to compute the Q´s of the resonances. Results computed using both methods are compared with analytical results for layered spheres. The methods are used to compute the near-resonance backscattering by a sphere having an intensity-dependent (two-photon absorption) loss
Keywords :
backscatter; laser cavity resonators; laser theory; optical losses; refractive index; stimulated Raman scattering; dielectric sphere; effective-average modal gain; gain coefficients; imaginary part; inhomogeneous spherical resonators; layered spheres; loss coefficients; modal loss; near-resonance backscattering; quality factors; refractive index; resonance Qs; spatial hole burning; spatial perturbation; spherical laser resonators; stimulated Raman scattering; time-independent perturbation method; two-photon absorption; two-photon absorption loss; Absorption; Dielectric losses; Nonlinear optics; Optical losses; Optical pumping; Optical refraction; Optical resonators; Optical scattering; Optical variables control; Refractive index;
Journal_Title :
Quantum Electronics, IEEE Journal of
