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Simple, stable, and compact multiple-reflection optical cell for very long optical paths.

Claude Robert1

  • 1Laboratoire de Physique et Chimie de l'Environnement (LPCE), Unité Mixte Recherche 6115, CNRS-Université d'Orléans, 3A, Avenue de la Recherche Scientifique, 45071 Orléans Cedex 2, France. claude.robert@cnrs-orleans.fr

Applied Optics
|August 7, 2007
PubMed
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A novel multiple-reflection optical cell offers a large optical path using standard mirrors. This simple, stable, and cost-effective design enhances sensitivity for applications like atmospheric trace species detection.

Area of Science:

  • Optics and Photonics
  • Spectroscopy
  • Environmental Science

Background:

  • Multiple-reflection optical cells enhance light-matter interaction for sensitive measurements.
  • Existing designs like White and Herriott cells have limitations in simplicity or stability.
  • There is a need for versatile optical cells with long path lengths and ease of construction.

Purpose of the Study:

  • To present a new type of multiple-reflection optical cell.
  • To demonstrate its advantages in terms of simplicity, stability, and cost-effectiveness.
  • To showcase its applicability in visible and infrared spectroscopy.

Main Methods:

  • The cell utilizes a three-mirror configuration, distinct from White cells.
  • It functions as a multiplier of a Herriott cell, inheriting its stability.

Related Experiment Videos

  • Standard mirrors are employed, minimizing manufacturing tolerances.

    • Main Results:

    • A compact 5-liter demonstrator cell was built and tested.
    • The cell allows for a large number of reflections, limited only by mirror reflectivity.
    • Successful operation was shown with visible lasers and infrared laser diodes.

    Conclusions:

    • The presented optical cell offers a simple, stable, and cost-effective solution for long optical path requirements.
    • It serves as a versatile platform, encompassing Herriott and White cells as specific cases.
    • The technology is suitable for sensitive detection of atmospheric trace species and other spectroscopic applications.