The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Design of new multipass gas cells with circular and elliptical cross-section

På svenska

Author

  • Chunsheng Yan
  • Binhao Wang
  • Gabriel Somesfalean

Summary, in English

Two new types of multipass gas cells with circular and elliptical cross-sections were developed. As for a cylindrical cell, the reflected rays in the circle would be an irregular trace without superposition and termination, if its central angle is a bit more than 2 pi/3 for an example. Each two adjacent reflected points have the same optical path difference and optical light passes through different optical distances before different reflection points. As for a cylindroidal cell, if the optical ray passes through one focus point of the ellipse, it must also pass through the other. The light will exit finally from the termination point of an axis. The optical distance depends on the eccentricity of the ellipse and the size of the emergent window. In this article, the detailed mathematical derivations of the optical multireflection traces for the two structures are presented. The unified formula is developed. It is found that these designs have small volumes and adjustable long optical paths. For example, the optical distances in the two structures are about 625 mm for a circle with 50 mm radius. The performance of the system can be enhanced by coating high total reflection film, increasing the processing and positioning precisions, and using highly collimating laser beam. (C) 2014 Wiley Periodicals, Inc.

Department/s

Publishing year

2014

Language

English

Pages

3003-3009

Publication/Series

Microwave and Optical Technology Letters

Volume

56

Issue

12

Document type

Journal article

Publisher

John Wiley & Sons Inc.

Topic

  • Atom and Molecular Physics and Optics

Keywords

  • multipass gas cell
  • gas sensor
  • cylindrical gas cell
  • elliptical
  • cylinder gas cell

Status

Published

ISBN/ISSN/Other

  • ISSN: 0895-2477