24 April 2010 Tunable liquid crystal filters including variable FWHM control
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Abstract
Meadowlark Optics has successfully built and demonstrated a liquid crystal based tunable filter with novel FWHM tunability. This allows separate control over both the location of a narrow spectral bandpass and the width of the bandpass function. This non-mechanical, imaging filter thus enables random access of the visible to near IR spectrum and also controlling the specificity of the transmitted light. We will discuss both the relative trade-offs in this filter design space and present data from functional units.
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Paul A. Searcy, Paul A. Searcy, Patrick Wagner, Patrick Wagner, Robert A. Ramsey, Robert A. Ramsey, John Powell, John Powell, Thomas G. Baur, Thomas G. Baur, "Tunable liquid crystal filters including variable FWHM control", Proc. SPIE 7672, Polarization: Measurement, Analysis, and Remote Sensing IX, 76720F (24 April 2010); doi: 10.1117/12.852431; https://doi.org/10.1117/12.852431
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