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Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
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Record-high-Q AMTIR-1 microresonators for mid- to long-wave infrared nonlinear photonics
Optics Letters
|November 4, 2025
Summary
Researchers developed a millimeter-scale AMTIR-1 chalcogenide glass microresonator with a record high Q-factor of 1.2×107. This advancement enables new possibilities for infrared nonlinear optics and thermal imaging systems.
Area of Science:
- Materials Science
- Optical Engineering
- Photonics
Background:
- AMTIR-1 chalcogenide glass is suitable for thermal imaging due to its optical properties.
- Whispering gallery mode microresonators are crucial for various photonic applications.
Purpose of the Study:
- To fabricate and characterize a high-Q whispering gallery mode microresonator using AMTIR-1.
- To explore the potential of AMTIR-1 microresonators for infrared nonlinear optics.
Main Methods:
- Fabrication of millimeter-scale AMTIR-1 microresonators.
- Measurement of Q-factor at 1550 nm.
- Characterization of thermal properties and optical dispersion.
Main Results:
- Achieved a Q-factor of 1.2×107, significantly higher than previous reports.
- Demonstrated low thermal conductivity for effective thermal resonance tuning.
- Observed anomalous dispersion and low absorption near 7 µm.
Conclusions:
- AMTIR-1 microresonators offer unprecedented Q-factors for infrared applications.
- The material's properties are ideal for mid-infrared and long-wave infrared nonlinear optics.
- Potential for microresonator frequency comb generation in the mid-infrared spectrum.
