Photon Design Ltd., the global leader in photonic simulation CAD software, will take its unique, PCSEL simulation solution to PCSEL 2025, the International Workshop on PCSELs, held at the University of Glasgow, 10–12 November 2025. PCSEL 2025 provides a platform for presenting research findings and discussing developments in PCSEL (photonic crystal surface emitting lasers) device design, engineering and manufacturing technologies. The conference will also address emerging opportunities for this rapidly advancing, new laser type, which is particularly well-suited to high-coherent power applications in datacoms, telecoms, sensing, and material processing markets.

Dr. Dominic Gallagher, CEO of Photon Design, said, “Photon Design is a leader in PCSEL design and simulation. PCSELs are challenging to model, due to their complex crystal structures, however, using both our HAROLD and OmniSim simulation tools makes it possible. HAROLD simulates the gain spectra in the PCSELs epitaxy structure, while OmniSim, an FDTD-based, dynamic gain modeller, simulates how pulsed laser light propagates through the laser over time. OmniSim’s Q-factor calculator can determine operating wavelength and linewidth results 85% faster than conventional simulators, with equivalent accuracy. It also generates band diagrams for photonic crystal structures, which can then be optimized using our Kallistos simulator.”

The PCSEL 2025 workshop spans three days with lectures and invited talks from PCSEL experts, covering key topics such as high-power, InP-based PCSELs, GaN implementations and photonic-crystal integration. This year, the workshop is held in conjunction with the International Symposium on Photonic and Electromagnetic Crystal Structures (PECS) XIV. The keynote address will be delivered by Prof. Susumu Noda of Kyoto University, with distinguished academic speakers from Aston, Illinois, Peking and Kyoto universities and industrial representatives from Sumitomo Electric, Hamamatsu Photonics, Stanley Electric and Huawei UK.