Project Description
Infrared (IR) sensing of gases has widespread applications in Industry, Medicine and Atmospheric monitoring. Due to its non-invasive nature and the distinct absorption ‘fingerprint’ each molecule has, the obtained in situ measurements are a reliable and sensitive method of detecting chemical species. Pair this with the use of optical fibres to guide the light to and from the sample, and you add the ability to monitor systems in harsh/inaccessible environments under unforgiving conditions.
Fibre-coupled IR measurements have typically involved near-IR (NIR) radiation. This is due to the high maturity of NIR fibre optics, developed for data transmission in the telecommunications industry. For gas sensing, however, the sensitivity in the NIR is typically orders of magnitude smaller than that in the mid-IR (MIR).
Shifting the focus from NIR to MIR remote measurements has not been trivial due to the lack of broadband MIR light sources or low loss fibres over that spectral window. However, the recent combination of optical parametric oscillator / dual-comb light sources and anti-resonant hollow-core fibres for light guiding has demonstrated a new capability for performing multi-species, remote gas detection.
This project aims to further develop this technique, with the focus on developing a stable and rugged apparatus for continuous diagnostic measurements in a harsh / inaccessible environment.
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CDT Essential Criteria
A Masters level degree (MEng, MPhys, MSc) at 2.1 or equivalent in Physics or relevant Engineering subject.
Desire to work collegiately, be involved in outreach, undertake taught and professional skills study.
Project Essential Criteria
This project will cover spectroscopy, gas sensing and experimental development so the candidate must have a keen interest in these areas.
A strong desire and ability to put theory into practice to make a difference.
The ability to work as part of a wider team and show initiative when working alone.
Have an interest with working with industrial partners and end users of the resulting technology.
Project Desirable Criteria
Knowledge of setting up optical systems and laser safety.
Knowledge of Gas Absorption Spectroscopy.
Knowledge of Fourier Transform Spectroscopy.
The CDT
The CDT in Applied Photonics provides a supportive, collaborative environment which values inclusivity and is committed to creating and sustaining a positive and supportive environment for all our applicants, students, and staff. For further information, please see our ED&I statement: https://bit.ly/3gXrcwg.
Forming a supportive cohort is an important part of the programme and our students take part in various professional skills workshops, including Responsible Research and Innovation, and attend outreach training.
Desire to work effectively in a project-driven environment, both independently and as part of a team.