The feasibility of near-infrared electrooptic Hadamard transform Raman spectrometry

Abstract

The feasibility of observing Raman spectra in the near i.r. spectral region using a Hadamard transform spectrometer is discussed. The encoding mask for the Hadamard transform spectrometer may be fabricated from a liquid crystal spatial light modulator array (LC-SLM array). The encoding mask may also function as a variable band-pass knife-edge rejection filter for removal of the Rayleigh line to provide selective multiplexing. Hadamard transform Raman spectrometry should compare favourably with Fourier transform Raman spectrometry.