ATR Instrument Used in Infrared Fourier Transform Spectroscopy

Abstract

The general consideration,design of optical and mechanical structure for an inner attenuation total reflection(ATR) instrument used in infrared Fourier transform spectroscopy were introduced.The facula was reduced three times and focalized on samples,the optical system was restored and focalized to a receiver.The penetrating depth and inner total reflective times were analyzed,and the energy usage ratio could be calculated.The results showed that the energy usage ratio was 6%,the inner total reflection was fourteen times.At last,several samples of hair and polypropylene were tested by the FTS-7 infrared Fourier transform spectroscopy of American Bio-rad Company.