Modeling and design of a highly compact chaotic cavity for optical gas sensing applications

Dongxia Qu, Claire F. Gmachl

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

We present a novel class of compact, robust, and potentially cost-effective chaotic cavities for trace-gas sensing applications. The cavity consists of a single, closed, reflecting surface and can support up to 15.5 meter of optical path length with a cavity volume of only 68 cm3. The design is based on quasi-chaotic ray dynamics in a 3-dimensional (3-D) deformed sphere. Within the cavity, light traces out a quasi-stable trajectory that has been improved to achieve long optical path length and little beam overlap. The results show that the proposed chaotic cavity effectively refocuses the beam as the light bounces off the cavity wall. We modeled, fabricated, and tested a prototype cavity. The chaotic cavity can successfully achieve a 40-pass trajectory with a pulsed AlGaInP diode laser emitting at 661 nm. The experimental results agree well with calculations.

Original languageEnglish (US)
Title of host publicationThe 6th IEEE Conference on SENSORS, IEEE SENSORS 2007
Pages1349-1352
Number of pages4
DOIs
StatePublished - Dec 1 2007
Event6th IEEE Conference on SENSORS, IEEE SENSORS 2007 - Atlanta, GA, United States
Duration: Oct 28 2007Oct 31 2007

Publication series

NameProceedings of IEEE Sensors

Other

Other6th IEEE Conference on SENSORS, IEEE SENSORS 2007
CountryUnited States
CityAtlanta, GA
Period10/28/0710/31/07

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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    Qu, D., & Gmachl, C. F. (2007). Modeling and design of a highly compact chaotic cavity for optical gas sensing applications. In The 6th IEEE Conference on SENSORS, IEEE SENSORS 2007 (pp. 1349-1352). [4388661] (Proceedings of IEEE Sensors). https://doi.org/10.1109/ICSENS.2007.4388661