Dr Johannes Herrnsdorf

Senior Lecturer

Institute of Photonics

Personal statement

Dr. Johannes Herrnsdorf is a research associate at the Institute of Photonics. His main interests are the exploration of the physics of gallium nitride micro-LEDs and their development towards a wide range of applications including communications and imaging.

His research has equipped him with a broad background in semiconductor-based photonics, including solution processible organic and inorganic materials for colour conversion and lasers, and semiconductor devices for operation from the ultra-violet through to the near infrared wavelengths. He currently focusses on structured digital illumination, which is scalable from microscopic through to kilometre ranges, and on the few-photon operation of LED-enabled optical links. Dr Herrnsdorf has been awarded an EPSRC UKRI Innovation Fellowship to support his work on structured illumination and digital lighting at the few-photon level.

Scopus profile:
https://www.scopus.com/authid/detail.uri?authorId=35279751900

Google scholar profile:
https://scholar.google.com/citations?user=CjepYEMAAAAJ&hl=en

Expertise

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Prize And Awards

Highlights of 2017 in Semiconductor Science and Technolog: Recipient; 2017

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Publications

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Publications

Compact system for eye tracking with virtual reality/augmented reality displays via deep learned MicroLED projection and single-pixel sensing: Johnstone Graeme E, Higham Catherine F, Kanwal Aisha, Herrnsdorf Johannes, Henderson Robert K, Dawson Martin D, Murray-Smith Roderick, Strain Michael J; Advanced Photonics Research Vol 7 (2026); https://doi.org/10.1002/adpr.70286
Simultaneous data display and environmental sensing with a micro-LED display: Gray J A, Zhang Y, McKendry J J D, Li D D, Henderson R K, Strain M J, Dawson M D, Herrnsdorf J; Optics Express Vol 34, pp. 35312-35321 (2026); https://doi.org/10.1364/OE.606550
UV-C free-space quantum key distribution: Liu Feng, Farmer James, Faulkner Grahame, Trichili Abderrahmen, McKendry Jonathan, Xie Enyuan, Wang Zhaoming, Wang Jianming, Hill Jordan, Herrnsdorf Johannes, Rajbhandari Sujan, Dawson Martin D, O'Brien Dominic; Optica Quantum Vol 4, pp. 397-405 (2026); https://doi.org/10.1364/OPTICAQ.604157
1.5 Gbps optical wireless communications using far-ultraviolet-C micro-light emitting diodes: Zimi Hichem, McKendry Jonathan JD, Babadi Sina, Osahon Isaac NO, Younus Othman I, Ruschel Jan, Rass Jens, Einfeldt Sven, Haas Harald, Dawson Martin D, Rajbhandari Sujan, Herrnsdorf Johannes; 2026 15th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP) 15th International Symposium on Communication Systems, Networks and Digital Signal Processing 2026 15th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2026 (2026); https://doi.org/10.1109/CSNDSP68462.2026.11654373
Single pixel image classification using an ultrafast digital light projector: Kanwal Aisha, Johnstone Graeme E, Dehkhoda Fahimeh, Herrnsdorf Johannes H, Henderson Robert K, Dawson Martin D, Porte Xavier, Strain Michael J; Optics Express Vol 34, pp. 23803-23816 (2026); https://doi.org/10.1364/OE.598810
High-speed switching of UV-C LEDs for communications and sensing applications: Hill Jordan, Gray Johnathan, Zimi Hichem, Xie Enyuan, McKendry Jonathan, Cheng Chen, Sagar Jaya, Herrnsdorf Johannes, Rajbhandari Sujan, Joshi Siddarth Koduru, Oi Daniel, Haas Harald, Henderson Robert, Dawson Martin; 4th International Conference on UV-LED Technologies & Applications (ICULTA 2026) (2026)

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Research

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Professional Activities

Steps towards market-ready far-UVC light emitting diodes – aspects of efficiency, reliability, modulation, and fiber coupling capability: Contributor; 1/2027
High-Speed and Robust Optical Wireless Communication Systems: Digital Signal Processing and Application Scenarios: Contributor; 5/2026
Compact UV-C MicroLED Transmitter for Intersatellite Quantum Key Distribution: Contributor; 17/10/2025
Deep Ultra-Violet Micro-Light-Emitting Diodes for Compact Quantum Key Distribution Transceivers: Speaker; 31/7/2025
SCDT proposal development: Contributor; 13/2/2023
International Workshop on Nitride Semiconductors 2022: Participant; 10/11/2022

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Projects

UDLA 2527 University of Strathclyde | Joba, Csongor: Herrnsdorf, Johannes (Principal Investigator) Rajbhandari, Sujan (Co-investigator) Joba, Csongor (Research Co-investigator); 01-Jan-2026 - 01-Jan-2030
Advanced Network Connectivity using Harmonious Optical and Radio technologies (ANCHOR) HORIZON-MSCA-2024-DN-01: Rajbhandari, Sujan (Principal Investigator) Herrnsdorf, Johannes (Co-investigator) Li, David (Co-investigator) McKendry, Jonathan (Co-investigator); 01-Jan-2026 - 31-Jan-2029
Fraunhofer UK Research Limited: Studentship Agreement | Vijayakumar, Akhil Dutt: Rajbhandari, Sujan (Principal Investigator) Herrnsdorf, Johannes (Co-investigator) Vijayakumar, Akhil Dutt (Research Co-investigator); 01-Jan-2026 - 01-Jan-2029
Intersatellite Deep Ultraviolet Quantum Keys: Herrnsdorf, Johannes (Principal Investigator) Oi, Daniel (Co-investigator) Spesyvtseva, Susan (Co-investigator); 17-Jan-2025 - 31-Jan-2027
TITAN Extension. Integration of high-speed micro-LED transmitters with reconfigurable intelligent surfaces (micro-LED RIS): Herrnsdorf, Johannes (Principal Investigator) Dawson, Martin (Co-investigator); 01-Jan-2024 - 30-Jan-2026
plaTform drIving The ultimAte coNnectivity (TITAN) (Future Communications Systems Hub): Haas, Harald (Principal Investigator) Dawson, Martin (Co-investigator) Herrnsdorf, Johannes (Co-investigator) Tavakkolnia, Iman (Co-investigator); 01-Jan-2023 - 30-Jan-2026