Group Members

Prof Johan Nilsson
tel: +44(0) 23 8059 3101

Prof Jayanta Sahu
tel: +44(0) 23 8059 3162

Meng (Betty) Zhang
tel: +44(0) 23 8059 9091

Dr Junqing Zhao
tel: +44(0) 23 8059 7719


Harish Achar Vasant
tel: +44(0) 23 8059 5768

Pablo Rojas Hernandez
tel: +44(0) 23 8059 3924

PhD projects with this group

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How to work with us

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High Power Fibre Lasers

The High Power Fibre Laser group, led by Prof Johan Nilsson is one of several groupings with a research interest in high-power fibre lasers and amplifiers at the Optoelectronics Research Centre.

Our research is focused on higher powers, new wavelengths, and new fibre designs for pulsed and cw applications in areas such as telecom, displays, and materials processing. We employ cladding-pumpingto reach high powers and use fibre Raman devices and crystals for wavelength conversion.

We work in close collaboration with the Silica Fibre Fabrication Group which fabricates the vast majority of the fibers we use. We also collaborate with a number of commercial and non-commercial partners (Collaborations), including the ORC spin-out company SPI Lasers.

High-power fiber lasers are powered by reliable, low-cost semiconductor pump lasers, and indeed feeds on the current rapid development of such sources. A crucial point for an efficient device is how efficiently we can launch the beam from the pump laser into the cladding-pumped fiber. Our in-house solutions to this are GT-wave fibers and diode beam-shaping technology.

Our Collaborators

Cobolt AB, Stockholm, Sweden (
High power fibre lasers

Kwangju Institute of Science and Technology, Korea
Professor Kyunghwan Oh, Department of Information and Communications, Fibre Optics Research Lab - Fibre fabrication

Luvantix, Seoul, Korea (

Royal Institute of Technology, Stockholm, Sweden (
Professor Fredrik Laurell, Department of Physics and Optics - Nonlinear frequency converstion and visible lasers

Seoul National University, Korea (
Professor Namkyoo Park, Optical Communication Systems Laboratory, National Research Lab for Next Generation Optical Amplifiers - High power fibre devices and their use in optical telecommunications systems

Southampton Photonics, England
( )
High power fibre devices and their use in optical telecommunications systems

Copyright University of Southampton 2006