Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
Articles 1 - 2 of 2
Full-Text Articles in Physical Sciences and Mathematics
Nonlinear Effects In Magnetic Garnet Films And Nonreciprocal Optical Bloch Oscillations In Waveguide Arrays, Pradeep Kumar
Nonlinear Effects In Magnetic Garnet Films And Nonreciprocal Optical Bloch Oscillations In Waveguide Arrays, Pradeep Kumar
Dissertations, Master's Theses and Master's Reports - Open
This dissertation presents detailed experimental and theoretical investigations of nonlinear and nonreciprocal effects in magnetic garnet films. The dissertation thus comprises two major sections. The first section concentrates on the study of a new class of nonlinear magneto-optic thin film materials possessing strong higher order magnetic susceptibility for nonlinear optical applications. The focus was on enlarging the nonlinear performance of ferrite garnet films by strain generation and compositional gradients in the sputter-deposition growth of these films. Under this project several bismuth-substituted yttrium iron garnet (Bi,Y) 3 (Fe,Ga)5 O12(acronym as Bi:YIG) films have been sputter-deposited over gadolinium gallium …
Magneto-Photonic Crystals For Optical Sensing Applications, Neluka Dissanayake
Magneto-Photonic Crystals For Optical Sensing Applications, Neluka Dissanayake
Dissertations, Master's Theses and Master's Reports - Open
Among the optical structures investigated for optical sensing purpose, a significant amount of research has been conducted on photonic crystal based sensors. A particular advantage of photonic crystal based sensors is that they show superior sensitivity for ultra-small volume sensing. In this study we investigate polarization changes in response to the changes in the cover index of magneto-optic active photonic band gap structures. One-dimensional photonic-band gap structures fabricated on iron garnet materials yield large polarization rotations at the band gap edges. The enhanced polarization effects serve as an excellent tool for chemical sensing showing high degree of sensitivity for photonic …