Publication

Compact Fourier transform spectrometers using FR4 platform

Caglar Ataman
2009
Journal Articles

Abstract

A novel magnetic actuated polymer optical platform is integrated into lamellar grating and Michelson type Fourier transform spectrometers. The proposed advantages of the novel platform over existing approaches, such as MEMS spectrometers, or bulky FTIR systems, include millimeter range dimensions providing a large clear aperture and enabling conventional machining for device fabrication, a controllable AC and/or DC motion both in rotational and translational modes, and real-time measurement. The platform is capable of achieving +/- 250 mu m DC deflection (i.e., 20cm(-1) frequency resolution) in ambient pressure in the translational mode. A spectral resolution of 0.89 nm at 638 nm is demonstrated using this platform in a Michelson interferometer configuration. In addition, an overview of system integration methods including an optical position feedback mechanism is also discussed. (C) 2009 Published by Elsevier B.V.

Official source

https://infoscience.epfl.ch/entities/publication/c6aa6c44-8bd8-40fc-8360-7fe9dfe71805

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Caglar Ataman
2009
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/c6aa6c44-8bd8-40fc-8360-7fe9dfe71805

About this result

Related concepts (21)

Michelson interferometer

The Michelson interferometer is a common configuration for optical interferometry and was invented by the 19/20th-century American physicist Albert Abraham Michelson. Using a beam splitter, a light source is split into two arms. Each of those light beams is reflected back toward the beamsplitter which then combines their amplitudes using the superposition principle. The resulting interference pattern that is not directed back toward the source is typically directed to some type of photoelectric detector or camera.

Interferometry

Interferometry is a technique which uses the interference of superimposed waves to extract information. Interferometry typically uses electromagnetic waves and is an important investigative technique in the fields of astronomy, fiber optics, engineering metrology, optical metrology, oceanography, seismology, spectroscopy (and its applications to chemistry), quantum mechanics, nuclear and particle physics, plasma physics, biomolecular interactions, surface profiling, microfluidics, mechanical stress/strain measurement, velocimetry, optometry, and making holograms.

Common-path interferometer

A common-path interferometer is a class of interferometers in which the reference beam and sample beams travel along the same path. Examples include the Sagnac interferometer, Zernike phase-contrast interferometer, and the point diffraction interferometer. A common-path interferometer is generally more robust to environmental vibrations than a "double-path interferometer" such as the Michelson interferometer or the Mach–Zehnder interferometer.

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