A stationary Hadamard encodement mask has been designed from a liquid crystal display. This mask, when properly installed and positioned in a dispersive instrument, allows the selected Hadamard encoded spectral elements to be focused on a single detector. Discussion of the advantages derived by this technique is presented. Several emission spectra in the visible and near-infrared region demonstrate the usefulness of the Hadamard transform technique. This novel spectrometer can provide a no-moving-parts spectroscopy for future spectral applications.
HammakerR. M.GrahamJ. A.TilottaD. C.FateleyW. G., in Vibrational Spectra and Structure, DurigJ. R., Ed. (Elsevier Science Publishing Company, Amsterdam, 1986), Vol. 15, pp. 401–485.
8.
HammakerR. M.GrahamJ. A.TilottaD. C.FateleyW. G., in Vibrational Spectra and Structure, DurigJ. R., Ed. (Elsevier Science Publishing Company, Amsterdam, 1986), Vol. 15, p. 417.
9.
ElionHerbert A.MorozovV. N., Optoelectronic Switching Systems in Telecommunications and Computers, (Marcel Dekker, New York, 1984).
10.
KhanA. H.NejibU. R., Appl. Opt.26, 270 (1987).
11.
Display Products Catalog1986, Part No. ANDO78–0786 (AND Corporation, Burlingame, California).
12.
HarwitM.SloaneN. J. A., Hadamard Transform Optics (Academic Press, New York, 1979).
13.
NelsonE. D.FredmanM. L., J. Opt. Soc. Am.60, 1664 (1970).
14.
BornMaxWolfEmil, Principles of Optics (Pergamon, New York, 1980), pp. 411–412; or HutleyM. C., Diffraction Gratings (Academic Press, New York, 1982), pp. 33–36.
