Showing papers on "Mach–Zehnder interferometer published in 1971"
TL;DR: The Michelson interferometer may be used to measure the separation between two parallel surfaces which are distant from the interferometers, and the effect of dispersion is discussed.
Abstract: The Michelson interferometer may be used to measure the separation between two parallel surfaces which are distant from the interferometer. A beam of light incident normal to these surfaces must be at least partially reflected back to the interferometer by each surface in order for the technique to work. The results of three measurements using this technique are described, and the effect of dispersion is discussed.
39 citations
TL;DR: In this paper, a holographic interferometer suitable for the precise measurement of heat transfer is described, where interference occurs between beams which have traversed the same optical components and hence these components need not be of high quality.
Abstract: A holographic interferometer suitable for the precise measurement of heat transfer is described. In this instrument interference occurs between beams which have traversed the same optical components and hence these components need not be of high quality. Compared with the conventional Mach‐Zehnder interferometer, the present instrument is less expensive and simpler to construct, and yet the two interferometers yield comparable accuracy. For illustration, the holographic interferometer is used to study the free convection thermal boundary layer on a heated isothermal vertical flat plate. The results are in good agreement with an existing theory.
21 citations
TL;DR: In this paper, a Mach-Zehnder interferometer was used to measure the complex permittivity of lossy dielectrics in the submillimetre region.
Abstract: A Mach-Zehnder interferometer is described which can be used to measure the complex permittivity of lossy dielectrics in the submillimetre region. Measurements made at 890.8 GHz show that epsilon ' is 2.355 and epsilon is 0.123 for chlorobenzene and that epsilon ' is 4.040 and epsilon is 2.219 for water. These values agree favourably with those obtained by other workers.
9 citations
TL;DR: In this paper, a very small pinhole stop is introduced into one of the two spatially separated point-source images that the differential-shear interferometer produces, and the technique and one example are discussed.
Abstract: An absolute interferometer may be obtained from a differential-shear interferometer if a very small pinhole stop is introduced into one of the two spatially separated point-source images that the differential-shear interferometer produces. The technique and one example are discussed.
4 citations
TL;DR: In this article, a continuous gas laser was used for alignment of the Mach-Zehnder interferometer for monochromatic and white light fringes of a monochrome and white-light fringes.
Abstract: Iterative technique using continuous gas laser for alignment of Mach-Zehnder interferometer for monochromatic and white light fringes
3 citations
TL;DR: In this paper, the principle of a holographic interferometer is described, and experimental results are presented, drawing comparisons with the speckle interferometers of similar optical arrangement.
Abstract: This article describes the principle of a holographic interferometer, presents experimental results, and draws comparisons with the speckle interferometer of similar optical arrangement.
2 citations
TL;DR: In this paper, the optical path length of the interferometer can be controlled by changing the refractive index of an electrooptical crystal in the cavity, which can then be used to control the optical frequency modulation.
Abstract: Frequency modulation is achieved in the optical range by changing the length of Fabry-Perot interferometer. Either the geometric dimensions of the interferometer or its optical path length can be changed. The optical path length of the interferometer can be controlled by changing the refractive index of an electrooptical crystal in the cavity.