Imaging Michelson interferometer for a low-density gas jet characterization
Typ dokumentu
článek v časopisejournal article
Peer-reviewed
publishedVersion
Autor
Nejdl J.
Vančura J.
Boháček K.
Albrecht M.
Práva
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A new optical probing method with increased interferometric sensitivity for a low-density gas jet characterization is presented. The proposed technique employs a Michelson interferometer with a self-imaging object arm, which enables the relay imaging of the object on itself, and in this way, the phase sensitivity of the device is increased by a double propagation of the object laser beam through the gas jet. The wavelength of 405 nm was chosen to further increase the sensitivity by increasing the probe wavenumber. A low-density argon gas jet with various backing pressures was characterized by our method and by a commonly used Mach-Zehnder interferometer setup showing the expected twofold increase in the signal to noise ratio in the double pass configuration.
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- Publikační činnost ČVUT [1349]