Potential for using a digital micromirror device as a signal multiplexer in visible spectroscopy
| Autor: | Jennifer M. Kuntz, David L. McCurdy, Charles K. Utz, Robert M. Hammaker, Richard A. Deverse, Thomas M. Spudich |
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| Rok vydání: | 2003 |
| Předmět: |
Materials science
02 engineering and technology 01 natural sciences Signal Multiplexer Multiplexing Digital micromirror device law.invention symbols.namesake Optics law Spectroscopy Fourier Transform Infrared Absorption (electromagnetic radiation) Instrumentation Spectroscopy Radiation business.industry Spectrophotometry Atomic 010401 analytical chemistry Reproducibility of Results Signal Processing Computer-Assisted Equipment Design 021001 nanoscience & nanotechnology Image Enhancement 0104 chemical sciences Wavelength Fourier transform symbols 0210 nano-technology business Visible spectrum |
| Zdroj: | Applied spectroscopy. 57(7) |
| ISSN: | 0003-7028 |
| Popis: | A digital micromirror device (DMD™) was tested to demonstrate its potential as a multiplexing device for the simultaneous detection of visible electromagnetic radiation. Using a Visual Basic program, four sections of the DMD were illuminated by a light source and each region of mirrors was modulated at different low frequencies (14.92, 20.00, 25.00, and 34.48 Hz). A time-domain, multiplexed signal was collected from the sectors and a Fourier transform was performed on these data. The resulting frequency-domain spectrum showed that signal intensities correlated well with what was expected. Three different times were used to establish the best frequency resolution. Using this calculated frequency resolution, a 16-s scan could allow simultaneous detection of up to 240 emission/absorption wavelengths. Data collected also shows the selectivity of micromirror regions and the ability to choose specific regions of the micromirror plane, which could be valuable for a number of spectroscopic techniques. |
| Databáze: | OpenAIRE |
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