High-Q microcavities in 2D photonic crystal slabs studied by FDTD techniques and Pade approximation
2005 (English)In: Photonic Crystal Materials and Devices III / [ed] Adibi, A; Lin, SY; Scherer, A, BELLINGHAM, WA: SPIE-INT SOC OPTICAL ENGINEERING , 2005, Vol. 5733, 366-376 p.Conference paper (Refereed)
A series of microcavities in 2D hexagonal lattice photonic crystal slabs (PCS's) are studied. A combination of FDTD techniques and Pade approximation with Baker's algorithm is used to accurately determine the resonant frequencies and quality factors of the cavity modes simultaneously. Q factor larger than 10(6) is obtained for a one missing hole cavity. Another cavity with smaller and simpler design keeps Q factor larger than 10(5). Microcavities in silicon-on-insulator-type (SOI-type) PCS's are also Studied. Simulations show that Q factors of cavities in SOI-type PCS's are much smaller than those in the membrane PCS's. Deep etching of air holes is still required to obtain relatively high Q cavities in SOI-type PCS's.
Place, publisher, year, edition, pages
BELLINGHAM, WA: SPIE-INT SOC OPTICAL ENGINEERING , 2005. Vol. 5733, 366-376 p.
, PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE), ISSN 0277-786X ; 5733
microcavities; photonic crystals; quality factor
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:kth:diva-43012DOI: 10.1117/12.589579ISI: 000229438000039ScopusID: 2-s2.0-21244470005ISBN: 0-8194-5707-8OAI: oai:DiVA.org:kth-43012DiVA: diva2:447708
Conference on Photonic Crystal Materials and Devices III. San Jose, CA. JAN 24-27, 2005
QC 201110132011-10-132011-10-132011-10-13Bibliographically approved