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Ultrafast & Terahertz Photonics Group

Research areas


We use pump/probe spectroscopy to study how light and matter interact on femtosecond to nanosecond timescales. Using visible probes we can track electronic processes, while infrared radiation lets us study vibrational states of molecules and atomic-scale defects in semiconductors.


Recent papers:

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Terahertz medical imaging

Performing in vivo studies of the THz properties of skin is a major initiative in the group, supported by the EPSRC Terabotics Programme GrantLink opens in a new window. We develop robust measurement protocols and test them on a statistically significant number of patients, cross-checking with other methods.


Recent papers:

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Semiconductors and Energy materials

A major strand of our research is to improve our knowledge of the fundamental science underpinning new semiconductor materials, such as metal-halide perovskites, which are often attractive for photovoltaic applications.

Electronically-delayed optical pump/THz probe spectroscopy on a variety of semiconductors

Recent papers:

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Terahertz components, methods and techniques

We develop new THz devices and integrate them into novel systems designs that can perform THz imaging and THz spectroscopy faster, and with increased capabilities (e.g. polarisation control; robot-controlled probes).


Recent papers:

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Recent publication highlights [filter by topic: view all | highlights | THz | perovskites | nano | biomedical]

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Quantifying photoluminescence variability in monolayer molybdenum disulfide films grown by chemical vapour deposition


BFM Healy, SL Pain, J. Lloyd-Hughes, NE Grant and JD Murphy
Materials Research Express (Jan 2024)

Tue 23 Jan 2024, 07:24 | Tags: nanomaterials, photoluminescence, 2024, Lloyd-Hughes

High-bandwidth perovskite photonic sources on silicon


A. Ren, H. Wang, L. Dai, J. Xia, E. Butler-Caddle, J.A. Smith, ... S.A. Hindmarsh, A.M. Sanchez, J. Lloyd-Hughes, S. J Sweeney, ... and Wei Zhang
Nature Photonics 17, 798–805 (July 2023)

Zigzag HgTe Nanowires Modify the Electron–Phonon Interaction in Chirality-Refined Single-Walled Carbon Nanotubes


Z. Hu, B. Breeze, R.J. Kashtiban, J. Sloan and J. Lloyd-Hughes
ACS Nano 16 6789 (Apr 2022)

Thu 07 Apr 2022, 22:37 | Tags: nanomaterials, photoluminescence, Lloyd-Hughes, 2022, ultrafast

Predicting Solar Cell Performance from Terahertz and Microwave Spectroscopy

THz round robin

H. Hempel, T.J. Savenjie, M. Stolterfoht, J. Neu, M. Failla, V.C. Paingad, P. Kužel, E.J. Heilweil, J.A. Spies, M. Schleuning, J. Zhao, D. Friedrich, K. Schwarzburg, L.D.A. Siebbeles, P. Dörflinger, V. Dyakonov, R. Katoh, M.J. Hong, J.G. Labram, M. Monti, E. Butler-Caddle, J. Lloyd-Hughes, M.M. Taheri, J.B. Baxter, T.J. Magnanelli, S. Luo, J.M. Cardon, S. Ardo, T. Unold
Advanced Energy Materials 2102776 (Feb 2022)

Tue 01 Mar 2022, 11:13 | Tags: photoluminescence, perovskites, Lloyd-Hughes, 2022, ultrafast

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