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We propose and demonstrate optical manipulation in three dimensional space through standing wave. FEM simulations suggest a capability of trapping 1 μm particle at room temperature, and stationary trapping by counter propagating beams is achieved.
Optical losses and energy-transfer upconversion (ETU) in sputter-deposited polycrystalline thin film waveguides are investigated. We find that the high temperature anneal that is necessary for crystallization and optical activation of Er induces grain growth that causes large propagation losses. Through minimizing the grain growth, propagation...
Er-doping of high-index materials for compact on-chip optical devices are investigated. Two sets of materials, SiNx and ErxY2−xSiO5, are used as high-index host materials. We find that in the case of ErxY2−xSiO5, crystallization-induced surface roughness can limit the optical activation of Er and cause significant propagation loss, while in the case of SiNx, very high temperatures can be used without...
We have investigated a silicon nitride waveguide with a horizontal air slot which is integrated with SU8 fluidic channel. Formation of air slot is performed in SU8 channel by selective wet etching between SiNx and SiO2.
We design and fabricate green, self-luminescent Tb-doped SiOxNy microdisks on Si chip for low-cost, all-Si biosensor applications. WGM was obtained via top-pumping and side-PL measurements, and obtained Q-factor was 220.
Ridge-type ErxY2−xSiO5 waveguides were fabricated. Amorphous ErxY2−xSiO5 was deposited using reactive ion beam sputter deposition, and crystallized by high-temperature annealing. The inversion level achieved was 0.4, limited by grain-boundary scattering and multimodedness of waveguide
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