High performance Bi3Fe5O12/Sm3Ga5O12 (m) magneto-optical photonic crystals
2007 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 101, no 5Article in journal (Refereed) Published
We report the properties of one-dimensional heteroepitaxial all-garnet magneto-optical (MO) photonic crystals (MOPCs) composed of alternating MO-active Bi3Fe5O12 (BIG) and transparent Sm3Ga5O12 (SGG) quarter-wavelength layers grown by rf-magnetron sputtering on Ca,Mg,Zr:Gd3Ga5O12(111) and Gd3Sc2Ga3O12(001) crystals. MOPCs' spectra, as designed, exhibit a stop band structure and a band gap with the transmittance central peak at 750 nm caused by light localization in the half-wavelength BIG cavity. A series of MOPCs with different numbers of [BIG/SSG](m) reflectors (m=4, 5, and 6) has been fabricated to optimize the specific Faraday rotation theta(F) (deg/mu m) and MO-quality factor Q(deg)=2 parallel to theta(F)parallel to/absorption coefficient. A close BIG-to-SGG lattice match enabled significant improvement of [Bi3Fe5O12/Sm3Ga5O12](m) properties compared to previously reported [Bi3Fe5O12/Y3Fe5O12](m) [S. Kahl and A. M. Grishin, Appl. Phys. Lett. 84, 1438 (2004)] and [Bi3Fe5O12/Gd3Ga5O12](m) [S. I. Khartsev and A. M. Grishin, Alexander M.
Place, publisher, year, edition, pages
2007. Vol. 101, no 5
spatial light-modulator, pulsed-laser deposition, iron-garnet films, thermal-expansion, faraday-rotation, growth
IdentifiersURN: urn:nbn:se:kth:diva-16454DOI: 10.1063/1.2437051ISI: 000244945400086ScopusID: 2-s2.0-33947331718OAI: oai:DiVA.org:kth-16454DiVA: diva2:334496
QC 201005252010-08-052010-08-05Bibliographically approved