Monolithic microspectrometer using tunable ferroelectric liquid crystals

Details Monolithic microspectrometer using tunable ferroelectric liquid crystals Monolithic microspectrometer using tunable ferroelectric liquid crystals

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006apphl..89h1105m&link_type=abstract

Applied Physics Letters, Volume 89, Issue 8, id. 081105 (3 pages) (2006).

Physics

1

Visible And Ultraviolet Spectrometers, Liquid Crystals, Visible And Ultraviolet Sources, Photodiodes, Phototransistors, Photoresistors, Light-Emitting Devices

Scientific paper

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 ~400-720 nm achieving an optimal resolution of 12 nm in short wavelength regime to 20-25 nm 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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