A compact and stable acousto-optical spectrometer

Physics – Optics

Scientific paper

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Acousto-Optics, Bragg Cells, Charge Coupled Devices, Spectrometers, Spectrum Analysis, Astronomical Observatories, Electromagnetic Radiation, Energy Distribution, Line Spectra

Scientific paper

The present 60-MHz-bandwidth, merely 900 x 100 x 120 mm-dimensioned acoustooptical spectrometer with 100-kHz resolution was designed according to simplicity-maximizing criteria. The TeO2 deflector employed dispenses with the conventional tangent interaction outside the (110) axis, and instead resorts to the 'quasi-tangent' two-band interaction to obtain a greater bandwidth. The device allows integration times of several minutes during source-on and sky-off phases.

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