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We report on the design and experimental characterization of a surface-electrode multipole ion trap. Individual microscopic sugar particles are confined in the trap. The trajectories of driven particle motion are compared with a theoretical model, both to verify qualitative predictions of the model, and to measure the charge-to-mass ratio of the confined particle.The generation of harmonics of the driving frequency is observed as a key signature of the nonlinear nature of the trap. We remark on possible applications of our traps, including to mass spectrometry.

A Fourier transform spectrometer has been built using dual, common path, orthogonal, ring interferometers and 2-D CCD array as detector. A channelled Fourier-Fraunhofer hologram is produced from the sheared images of the source. The advantages of the use of a single Sagnac interferometer have been previously published1 and results reported.2 The problem of aliasing associated with obtaining higher resolution spectra over a large spectral range has been addressed without the need for narrow band filters. The use of an orthagonally oriented, second ring interferometer sorts the normally overlapping orders formed when the interference pattern is undersampled. Results of the measurement of optical spectra will be shown.