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Related Experiment Video

Updated: Mar 13, 2026

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

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

Published on: March 22, 2019

Remote Sensing with Commutable Monolithic Laser and Detector.

Rolf Szedlak¹, Andreas Harrer¹, Martin Holzbauer¹

¹Institute of Solid State Electronics & Center for Micro- and Nanostructures, TU Wien , Floragasse 7, 1040 Vienna, Austria.

|October 28, 2016

Summary

This summary is machine-generated.

This study introduces a compact, monolithic sensor chip integrating lasers and detectors for spectroscopic analysis. This innovation significantly advances miniaturized sensing systems, enabling highly sensitive gas detection.

Keywords:

monolithic integration on-chip quantum cascade detector quantum cascade laser sensor

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Area of Science:

Optoelectronics
Spectroscopy
Chemical Sensing

Background:

Miniaturization of sensing systems is a key trend.
Conventional spectroscopic tools require separate light sources, interaction regions, and detectors.
Existing setups are often bulky and complex.

Purpose of the Study:

To develop a novel concept for compact and versatile spectroscopic tools.
To present a monolithic sensor chip integrating both laser and detector functionalities.
To demonstrate the feasibility of miniaturized spectroscopic sensing.

Main Methods:

Integration of monolithic surface-active lasers and detectors on a single chip.
Room-temperature operation of the integrated optoelectronic components.
Elimination of distinct emitter and detector roles, enabling mutual commutation.

Main Results:

Successful proof-of-principle gas measurements were performed.
A limit of detection below 400 ppm for gases was achieved.
Demonstrated the crucial miniaturization potential for sensing devices.

Conclusions:

The presented monolithic sensor concept enables significant device miniaturization.
Mutual commutation of integrated laser and detector functions offers versatility.
This technology paves the way for next-generation compact spectroscopic sensors.