Mid-infrared gas-sensing systems and applications

Mid-infrared supercontinuum generation in a varying dispersion waveguide for multi-species gas spectroscopy

“…RACE-GAS sensing is a rapidly growing field. Applications of gas-sensing systems can be found in the control of industrial processes for the detection of hazardous gases [1], [2], in environmental monitoring for the 2 > REPLACE THIS LINE WITH YOUR MANUSCRIPT ID NUMBER (DOUBLE-CLICK HERE TO EDIT) < therefore, ideal for high-resolution multi-species molecular spectroscopy [14], [15].…”

Conformal CVD-Grown MoS2 on Three-Dimensional Woodpile Photonic Crystals for Photonic Bandgap Engineering

“…29,30 This article is licensed under CC-BY 4 MoS 2 is also an infrared transparent material and could therefore be a good candidate for mid-infrared sensing applications. 31,32 For the polymeric templates, a woodpile structure 33 was chosen, as it is a well-known simple photonic crystal that can be easily fabricated by using layer by layer lithographic approaches 34−36 (enabling mass production) or DLW. 37 Alternatively, rod-connected diamond structures, which have larger bandgaps for identical index contrasts, 38 could be used instead in future work.…”

High‐performance integrated mid‐infrared filter arrays

“…The fundamental absorption bands in the MIR are much stronger than the overtones present in the near-infrared (NIR) region. In addition, the separation of the different absorption characteristics is much easier in the MIR [1,2]. Gas sensing systems are important especially to ensure safety, for example, for the detection of inflammable and toxic gases, monitoring greenhouse gases and for measuring the presence of volatile organic compounds (VOCs) for air quality control, thereby opening a large global market [3].…”

“…The mid-infrared (MIR) range is known as the molecular "fingerprint" region where a large variety of gas molecules show their characteristic absorptions related to the vibrations and rotations of the molecular bonds [1]. Especially small gas molecules such as CO, CO 2 , NO, NO 2 , NH 3 and CH 4 show characteristic absorption features in the MIR region (3-30 µm).…”