What is it about?
Two-beam spectroscopy uses two beams of light that propagate at a certain angle and form an interference pattern, which can be used to determine the wavelength of the light. The same two beams are generated in the so-called heterodyne spectroscopy but differ in the sensitivity of the measurements, and on the range of the spectroscopic measurements. But how are compared the two methods sensitivities ? this paper suggests that under some premises similar sensitivities to the heterodyne spectroscopy can be potentially achieved.
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Why is it important?
Our findings points out that spectroscopic ranges can be broadened with potentially the same resolution of heterodyne spectroscopy.
Perspectives
It is hoped that the readers find a better understanding of the differences among the two kinds of spectrometers: two-beam and heterodyne.
Abundio Davila
Centro de Investigaciones en Optica
Read the Original
This page is a summary of: Mach–Zehnder Stationary Two-Beam Spectroscopy Using Compound Prisms, Applied Spectroscopy, March 2018, SAGE Publications,
DOI: 10.1177/0003702818763820.
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