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Permeabilization of Adhered Cells Using an Inert Gas Jet
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Imaging Michelson interferometer for a low-density gas jet characterization.

J Nejdl1, J Vančura1, K Boháček1

  • 1ELI Beamlines, Institute of Physics CAS, Prague 182 21, Czech Republic.

The Review of Scientific Instruments
|July 1, 2019
PubMed
Summary
This summary is machine-generated.

A novel optical method enhances gas jet characterization using a Michelson interferometer. This technique doubles the laser beam

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Area of Science:

  • Optical Physics
  • Interferometry
  • Gas Dynamics

Background:

  • Characterizing low-density gas jets is crucial for various scientific applications.
  • Traditional interferometric methods may lack sufficient sensitivity for subtle gas density variations.

Purpose of the Study:

  • To present a new optical probing method with enhanced interferometric sensitivity for low-density gas jet characterization.
  • To demonstrate a twofold increase in signal-to-noise ratio compared to conventional setups.

Main Methods:

  • Utilized a Michelson interferometer with a self-imaging object arm for relay imaging.
  • Employed a double propagation of the laser beam through the gas jet to amplify phase shifts.
  • Selected a 405 nm wavelength to increase probe wavenumber and sensitivity.
  • Compared results with a standard Mach-Zehnder interferometer setup.

Main Results:

  • The proposed Michelson interferometer setup achieved a twofold increase in signal-to-noise ratio.
  • Successfully characterized a low-density argon gas jet across various backing pressures.
  • Demonstrated the enhanced sensitivity of the double-pass configuration.

Conclusions:

  • The developed optical probing method offers superior sensitivity for low-density gas jet analysis.
  • This technique provides a more robust and accurate approach for gas jet characterization.
  • The self-imaging Michelson interferometer is a promising tool for fluid dynamics research.