Abstract

An apparatus is designed for use in obtaining fluorescence spectra, excitation spectra, and delayed fluorescence spectra, usually at low temperatures. A photometrically regulated 6500-W xenon lamp is used as excitation source, a double monochromator or varioilluminator as excitation monochromator; a variable temperature liquid helium cryostat as specimen holder; a double grating monochromator or varioilluminator as detection monochromator; and a photomultiplier as detector. A quartz–iodine lamp calibrated against a standard tungsten–quartz lamp is used for intensity calibrations. Fluorescence spectra are recorded by a digital system with a shaft position encoder for digitizing wavelength and an analog-to-digital converter for intensity. Data are recorded on magnetic tape which can be processed directly by an IBM system 360 computer. The selection of components of adequate resolution, speed, and capacity is discussed, and the computer programs are described. Installation of the recording system has facilitated greater wavelength accuracy and long calculations on the experimental data. Examples are given.

© 1970 Optical Society of America

Versatile Apparatus for Automatic Recording of Absolute Fluorescent Spectra*

F. R. Lipsett
J. Opt. Soc. Am. 49(7) 673-679 (1959)

High Resolution Luminescence Spectrometer. 2:Data Treatment and Corrected Spectra

Vo Dinh Tuan and Urs P. Wild
Appl. Opt. 13(12) 2899-2906 (1974)

High Resolution Luminescence Spectrometer. 1: Simultaneous Recording of Total Luminescence and Phosphorescence

Vo Dinh Tuan and Urs P. Wild
Appl. Opt. 12(6) 1286-1292 (1973)

A Computer Based Spectroradiometer System

J. E. Eby
Appl. Opt. 9(4) 888-894 (1970)

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J. Rolfe and S. E. Moore
Appl. Opt. 9(1) 63-71 (1970)