The Sensitivity and Accuracy of Dual-Wavelength Spectrophotometers
- 1 March 1964
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 3 (3), 351-355
- https://doi.org/10.1364/ao.3.000351
Abstract
The ultimate noise limit of a double-beam spectrophotometer is determined by the shot-noise in the photocurrent of the detector. The magnitude of the photocurrents to be expected is discussed for instruments using grating and prism monochromators. It is shown that a shot-noise level −4 can be obtained with both grating and prism monochromators at a bandpass of 1 mμ. The nonlinear relation between a concentration change of the substance under study and the detected signal is examined.This publication has 3 references indexed in Scilit:
- Interferometry in the Infrared*Journal of the Optical Society of America, 1955
- Rapid and Sensitive Spectrophotometry. III. A Double Beam ApparatusReview of Scientific Instruments, 1951
- Rapid and Sensitive Spectrophotometry. I. The Accelerated and Stopped-Flow Methods for the Measurement of the Reaction Kinetics and Spectra of Unstable Compounds in the Visible Region of the SpectrumReview of Scientific Instruments, 1951