Abstract
A vertically aligned deformed helix ferroelectric liquid crystal is used to fabricate a thermally controllable monolithic microspectrometer using a single liquid crystal cell and a photodiode. The device has an active range over the entire visible spectrum from ∼400–720nm achieving an optimal resolution of 12nm in short wavelength regime to 20–25nm in the long wavelength regime. Operation is demonstrated through spectral reconstruction of the mercury emission spectra and a broadband white light emitting diode using a commercial spectrometer and the liquid crystal based spectrometer.
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