Q factors and resonant states of whispering-gallery-mode dielectric microdisk cavities for lasing applications

Aliaksandr I. Rahachou; Igor V. Zozoulenko

doi:10.1117/12.602030

12 April 2005 Q factors and resonant states of whispering-gallery-mode dielectric microdisk cavities for lasing applications

Aliaksandr I. Rahachou, Igor V. Zozoulenko

Author Affiliations +

Proceedings Volume 5708, Laser Resonators and Beam Control VIII; (2005) https://doi.org/10.1117/12.602030
Event: Lasers and Applications in Science and Engineering, 2005, San Jose, California, United States

Abstract

We study the effect of boundary roughness on the resonant states broadening of the optical whispering-gallery-mode microdisk lasing cavities. We develop a new, computationally effective, and numerically stable approach based on the scattering matrix (S-matrix) technique that is capable to deal with both arbitrary complex geometry and inhomogeneous refraction index inside the two-dimensional cavity. The method presented has been applied to study the effect of surface roughness and inhomogeneity of the refraction index on Q-values of microdisk cavities for lasing applications. We demonstrate that even small surface roughness (Δr⟨ λ/50) can lead to an extreme degradation of high-Q cavity modes by many orders of magnitude. The results of numerical simulation are analyzed and explained in terms of wave reflection at a curved dielectric interface combined with the examination of Poincare surfaces of section as well as Husimi distributions.

Citation Download Citation

Aliaksandr I. Rahachou and Igor V. Zozoulenko "Q factors and resonant states of whispering-gallery-mode dielectric microdisk cavities for lasing applications", Proc. SPIE 5708, Laser Resonators and Beam Control VIII, (12 April 2005); https://doi.org/10.1117/12.602030

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available