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

235 nm and 255 nm light-emitting diode based Gbps optical wireless communications up to 30 meters: Zimi Hichem, Babadi Sina, Majlesein Behnaz, Osahon Isaac, McKendry Jonathan, Rajbhandari Sujan, Herrnsdorf Johannes, Haas Harald, Dawson Martin; Optics Express (2025); https://doi.org/10.1364/OE.580372
650 Mbps optical wireless communications using ultraviolet-C micro-light-emitting diodes: McKendry Jonathan, Zimi Hichem, Rajbhandari Sujan, Ruschel Jan, Rass Jens, Einfeldt Sven, Herrnsdorf Johannes, Dawson Martin; IEEE Photonics Conference 2025 (2025)
Ultraviolet micro-light-emitting diodes for satellite quantum key distribution: McKendry Jonathan, Gray Johnathan, Hill Jordan, Xie Enyuan, Willett Hobbs, Sagar Jaya, Joshi Siddarth Koduru, Rarity John, Herrnsdorf Johannes, Oi Daniel; IEEE Photonics Conference 2025 (2025)
Ultralow photon flux OWC links using UV‐C single‐photon detection: Liu Feng, Farmer James, Faulkner Grahame, McKendry Jonathan J D, Xie Enyuan, Zheng Qianfang, Wang Zhaoming, Wang Jianming, Hill Jordan, Herrnsdorf Johannes, Dawson Martin D, O'Brien Dominic; Laser and Photonics Reviews Vol 19 (2025); https://doi.org/10.1002/lpor.202401804
Single pixel image classification using ultrafast optoelectronic hardware: Kanwal Aisha, Johnstone Graeme, Herrnsdorf Johannes, Henderson Robert K, Dawson Martin, Porte Xavier, Strain Michael; CLEO®/Europe-EQEC (2025); https://doi.org/10.1109/CLEO/Europe-EQEC65582.2025.11111172
Optical wireless communications : enabling the next generation network of networks: Krishnamoorthy Aravindh, Safi Hossein, Younus Othman, Kazemi Hossein, Osahon Isaac N O, Liu Mingqing, Liu Yi, Babadi Sina, Ahmad Rizwana, Ihsan Asim, Majlesein Behnaz, Huang Yifan, Herrnsdorf Johannes, Rajbhandari Sujan, McKendry Jonathan, Tavakkolnia Iman, Caglayan Humeyra, Helmers Henning, Turnbull Graham A, Samuel Ifor, Dawson Martin, Schober Robert, Haas Harald; IEEE Vehicular Technology Magazine Vol 20, pp. 20-39 (2025); https://doi.org/10.1109/MVT.2025.3555366

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Research

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Professional Activities

SCDT proposal development: Contributor; 13/2/2023
International Workshop on Nitride Semiconductors 2022: Participant; 10/11/2022
Recent developments in gallium nitride micro-light-emitting diode structured light sources: Contributor; 8/12/2020
Integration of an LED/SPAD Optical Wireless Transceiver with CubeSat On-board Systems: Contributor; 28/9/2020
Combined Time of Flight and Photometric Stereo Imaging for Surface Reconstruction: Contributor; 28/9/2020
Micro-LEDs for technological convergence between displays, optical communications, and sensing and imaging systems: Contributor; 12/8/2020

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Projects

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 - 31-Jan-2025
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
Structured light projection for FLIM in scattering environments (QUANTIC): Strain, Michael (Principal Investigator) Dawson, Martin (Co-investigator) Herrnsdorf, Johannes (Co-investigator); 01-Jan-2023 - 30-Jan-2024
MicroLED Communications for High Altitude Pseudo Satellites: Herrnsdorf, Johannes (Principal Investigator); 01-Jan-2023 - 28-Jan-2025
HYDRI - HYDrogen sensoR for Industry: Herrnsdorf, Johannes (Principal Investigator) Li, David (Co-investigator); 01-Jan-2022 - 31-Jan-2025
Doctoral Training Partnership 2020-2021 University of Strathclyde | Gray, Johnathan: Herrnsdorf, Johannes (Principal Investigator) Dawson, Martin (Co-investigator) Gray, Johnathan (Research Co-investigator); 01-Jan-2021 - 01-Jan-2025