Surface tension powered self-assembly of 3-D micro-optomechanical structures

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Refractive collimating microlens arrays by surface tension self-assembly

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Characterisation of defects in waveguides formed by electron irradiation of silica-on-silicon

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Analysis of folded erbium-doped planar waveguide amplifiers by the method of lines

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Monolithic MEMS quadrupole mass spectrometers by deep silicon etching

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Design of a Microengineered Electrostatic Lens

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Silicon micromachined mass filter for a low power, low cost quadrupole mass spectrometer

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Batch fabrication of micro-coils for MR spectroscopy on silicon

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An experimental study to discriminate between the validity of diffraction theories for off-Bragg replay

We show that experiments clearly verify the assumptions made by the first-order two-wave coupling theory for one dimensional lossless unslanted planar volume holographic gratings using the beta-value method rather than Kogelnik's K-vector closure method. Apart from the fact that the diffraction process is elastic, a much more striking difference between the theories becomes apparent particularly in the direction of the diffracted beam in off-Bragg replay. We therefore monitored the direction of the diffracted beam as a function of the off-Bragg replay angle in two distinct cases: [a] the diffracted beam lies in the plane of incidence and [b] the sample surface normal, the grating vector and the incoming beam do not form a plane which calls for the vectorial theory and results in conical scattering.Comment: Corrected Eqs. (3) & (6); 14 pages, 8 figure

Compact design for MEMS cross-connect switches

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