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Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

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Waveguide-enhanced mid-infrared chem/bio sensors.

Boris Mizaikoff¹

¹Institute of Analytical and Bioanalytical Chemistry, University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany. boris.mizaikoff@uni-ulm.de.

Chemical Society Reviews

|September 3, 2013

Summary

This summary is machine-generated.

Mid-infrared (MIR) optical sensors offer unique molecular fingerprint specificity but face adoption challenges. Advances in light sources and on-chip technologies promise a future for MIR sensing in environmental and bioanalytical applications.

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Area of Science:

Optoelectronics
Chemical Sensing
Biomedical Diagnostics

Background:

Mid-infrared (MIR) optical sensing offers inherent molecular fingerprint specificity in the 2.5-20 μm range.
MIR waveguide-based chem/bio sensing lags behind visible and near-infrared counterparts due to adoption bottlenecks.

Purpose of the Study:

To review current advances in MIR chem/bio sensor technology.
To contrast these advances with limitations hindering widespread adoption.
To project the future potential of MIR sensing.

Main Methods:

Review of recent literature on MIR chem/bio sensor technologies.
Analysis of technological bottlenecks and their impact on sensor adoption.
Assessment of emerging light sources and waveguide technologies.

Main Results:

MIR sensors provide unique spectral fingerprints for molecular identification.
Key bottlenecks include limitations in light sources and integrated waveguide technologies.
Significant progress is being made in developing advanced light sources like quantum cascade lasers.

Conclusions:

Despite challenges, MIR optical sensing holds significant promise for label-free detection.
On-chip semiconductor waveguide technologies are crucial for future MIR sensor development.
MIR sensing is poised for growth in environmental analysis, process monitoring, and bioanalytics.