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

Volume

29

Issue

9

fYear

1993

fDate

9/1/1993 12:00:00 AM

Firstpage

2553

Lastpage

2561

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;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.247714

Filename

247714