Document Type
Article
Abstract
The use of a paratellurite acousto-optic tunable ® lter (AOTF) is demonstrated as a monochromator for spectrophotometry. This device operates in the range of 400 to 700 nm with a resolution from 2.5 nm (at 633 nm) to 0.5 nm (at 400 nm). Results of the initial characterizations indicate that behavior follows the theoretical model in terms of frequency/wavelength relationships, dependence of the output wavelength upon the incident radiation angle, and bandpass as a function of wavelength. Initial results of spectroscopic characterizations of permanganate, cobalt(II), holmium(III), praseodymium( III), and neodymium(III) solutions are presented. Placing a polarizer in the light path reduced the amount of stray light reaching the detector. Two types of photomultiplier tubes were used as detectors. The sensitivity of the PMTs varied at different wavelengths, which affected spectral responses and the effects of scattered light.
Publication Date
1-1-1999
Recommended Citation
Bucher, E. G.; Carnahan, J. W. (1999) Characterization of an acousto-optic tunable filter and use in visible spectrometry. Applied Spectroscopy, 53: 603-611.
Original Citation
Bucher, E. G.; Carnahan, J. W. (1999) Characterization of an acousto-optic tunable filter and use in visible spectrometry. Applied Spectroscopy, 53: 603-611.
Department
Department of Chemistry and Biochemistry
Legacy Department
Department of Chemistry and Biochemistry
Sponsorship
We gratefully thank the E. L. Ginzton Research Center, Varian Associates, Incorporated, for their financial support of this project.
ISSN
0003-7028
Language
eng
Publisher
Optical Society of America
