Michael Lengden

Michael Lengden is a Professor in the Department of Electronic and Electrical Engineering at the University of Strathclyde, Faculty of Engineering. His work centers on advanced optical sensing techniques for industrial and harsh-environment applications, particularly using tunable diode laser spectroscopy (TDLS) and cavity ring-down methods.

His research expertise includes:

• Gas composition measurements (CH₄, CO₂, NOx, SOx, H₂O)
• Miniaturization of optical sensors
• Photoacoustic and cavity-enhanced spectroscopy
• 3D printed gas sensors
• Chemical species tomography

Lengden's recent publications focus on integrating machine learning with laser spectroscopy for real-time combustion and exhaust monitoring in aeroengines and industrial systems. His work emphasizes rapid, non-intrusive, and accurate sensing in high-temperature, high-pressure environments. Trends show a strong shift toward hybrid AI-spectroscopy models, modular sensor design, and tomographic imaging for industrial emissions control.

He has received significant recognition, including:

• Applied Optics Best Paper Prize 2022 - Imaging Systems
• Member of the Institute of Physics and SPIE (2005)

Lengden leads and co-leads multiple EPSRC-funded research projects, including grants focused on 3D printing for photoacoustic sensing and CDT programs in photonic imaging. He supervises undergraduate, MSc, and doctoral students, particularly in optical fiber sensor development and photonic systems. He is actively involved in professional activities, including organizing IEEE workshops and presenting at international conferences on gas sensing and emissions measurement.

He is a key member of the Photonics Centre for Doctoral Training and collaborates extensively with industrial partners such as Rolls-Royce and Shell, as well as academic institutions like the University of Manchester and University of Southampton.