Application of micromirror arrays for Hadamard transform optics

Marian Hanf; Steffen Kurth; Detlef Billep; Ramon Hahn; Wolfgang Faust; Steffen Heinz; Wolfram Doetzel; Thomas Gessner

doi:10.1117/12.558419

7 April 2004 Application of micromirror arrays for Hadamard transform optics

Marian Hanf, Steffen Kurth, Detlef Billep, Ramon Hahn, Wolfgang Faust, Steffen Heinz, Wolfram Doetzel, Thomas Gessner

Proceedings Volume 5445, Microwave and Optical Technology 2003; (2004) https://doi.org/10.1117/12.558419
Event: Microwave and Optical Technology 2003, 2003, Ostrava, Czech Republic

Abstract

The paper presents a novel kind of Hadamard transform optic. First investigations are made with a micro mirror array in a Hadamard transform spectrometer (HTS) whereby the usually used detector array is replaced by the micro mirror array. All the mirrors are imaged onto a single detector. The measurement is performed using a Hadamard matrix, i.e. while each detector reading a certain combination of mirrors given by the matrix is reflecting the light towards the detector. All the rest of them are reflecting the light beside it. The consequence is an improvement of the signal to noise ratio (SNR). The novelty of the realized spectrometer is that in contrast to other applications the mirrors are not statically switched but they are forced to oscillate at their resonant frequency. By this way a special Hadamard matrix can be used that improves the SNR best.

Citation Download Citation

Marian Hanf, Steffen Kurth, Detlef Billep, Ramon Hahn, Wolfgang Faust, Steffen Heinz, Wolfram Doetzel, and Thomas Gessner "Application of micromirror arrays for Hadamard transform optics", Proc. SPIE 5445, Microwave and Optical Technology 2003, (7 April 2004); https://doi.org/10.1117/12.558419

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