Beyond the Rayleigh scattering limit in high-Q silicon microdisks: theory and experiment.
Abstrak
Using a combination of resist reflow to form a highly circular etch mask pattern and a low-damage plasma dry etch, high-quality-factor silicon optical microdisk resonators are fabricated out of silicon-on-insulator (SOI) wafers. Quality factors as high as Q = 5x10(6) are measured in these microresonators, corresponding to a propagation loss coefficient as small as alpha ~ 0.1 dB/cm. The different optical loss mechanisms are identified through a study of the total optical loss, mode coupling, and thermally-induced optical bistability as a function of microdisk radius (5-30 microm). These measurements indicate that optical loss in these high-Q microresonators is limited not by surface roughness, but rather by surface state absorption and bulk free-carrier absorption.
Topik & Kata Kunci
Penulis (3)
M. Borselli
T. Johnson
O. Painter
Akses Cepat
- Tahun Terbit
- 2005
- Bahasa
- en
- Total Sitasi
- 496×
- Sumber Database
- Semantic Scholar
- DOI
- 10.1364/OPEX.13.001515
- Akses
- Open Access ✓