Ewan Allan

Ewan Allan is a Researcher at Heriot-Watt University's Institute of Photonics and Quantum Sciences within the School of Engineering and Physical Sciences, Edinburgh, United Kingdom (EH14 4AS). His research focuses on experimental photonics with expertise in ultrafast laser development and nonlinear optical systems. Contact: e.allan@hw.ac.uk.

His primary research domains include:

• Laser Physics, particularly ultrafast lasers and mode-locking techniques
• Optical Parametric Oscillators (OPOs) for frequency conversion
• Optical Frequency Combs, especially for astronomical applications
• Compact laser design using diode pumping and Herriott cells
• Low repetition rate femtosecond pulse generation

Analysis of his 2023-2025 publications reveals a consistent trend toward miniaturization and efficiency in laser systems. Key advancements include single-diode-pumped Ti:sapphire lasers achieving 1-GHz repetition rates with 48-fs pulses, astrocomb development for astronomical spectroscopy, and Herriott-cell-enabled OPOs for low-repetition-rate operation. These innovations bridge fundamental photonics with practical applications in precision metrology and space observation.

Scientific awards are not documented in the available information.

He maintains active collaborations with D. T. Reid, R. A. McCracken, P. Castro-Marín, and H. Ostapenko at Heriot-Watt University. His work contributes to the Institute of Photonics and Quantum Sciences' reputation as a leading photonics research hub, with potential future impact in quantum technologies and astronomical instrumentation.