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Synthesis and Operation of Fluorescent-core Microcavities for Refractometric Sensing
Published on: March 13, 2013
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Perforated hollow-core optical waveguides for on-chip atomic spectroscopy and gas sensing
M Giraud-Carrier1, C Hill1, T Decker1
1Electrical and Computer Engineering, Brigham Young University , Provo, Utah 84602, USA.
Applied Physics Letters
|April 15, 2016
Summary
This study presents a novel hollow-core waveguide for on-chip atomic spectroscopy, enabling precise light-gas interactions. The device achieved a 9% absorption peak depth for 85Rb transitions, demonstrating its potential for compact spectroscopic applications.
Area of Science:
- Photonics and Optical Engineering
- Atomic Physics
- Integrated Optics
Background:
- Miniaturization of atomic spectroscopy systems is crucial for portable sensing applications.
- Existing methods often face challenges with environmental stability and integration.
- Hollow-core waveguides offer unique light-matter interaction properties.
Purpose of the Study:
- To develop and demonstrate a novel hollow-core waveguide structure for on-chip atomic spectroscopy.
- To investigate the integration of solid-core waveguides for enhanced environmental stability.
- To measure optical absorption of atomic vapors within the waveguide.
Main Methods:
- Fabrication of hollow-core waveguides based on Anti-Resonant Reflecting Optical Waveguides (AROW).
- Integration of buried solid-core waveguides for light delivery.
- Packaging of the chip with a Rubidium (Rb) vapor source.
- Monitoring optical absorption of 85Rb D2 line transitions.
Main Results:
- Demonstrated a functional hollow-core waveguide for on-chip atomic spectroscopy.
- Achieved short delivery paths for atomic vapor into the waveguide.
- Observed excellent environmental stability due to integrated solid-core waveguides.
- Measured maximum optical absorption peak depths of 9% for 85Rb.
Conclusions:
- The developed hollow-core waveguide structure is suitable for on-chip atomic spectroscopy.
- The design offers improved environmental stability and integration capabilities.
- This technology holds promise for various applications involving light-gas interactions.
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