Research Fellow

+44 (0)131 451 3033
Heriot-Watt University
Mohammed F. Saleh

Dr. Saleh’s research is engaged in performing theory and modeling studies to investigate linear, nonlinear, and quantum light-matter interactions in structures at the micro-scales. His research is to understand and exploit these kinds of interactions in cutting-edge microstructures to offer potential ideas that can lead to novel photonic devices for various applications. 

One of his main interests is to conduct research in hollow-core photonic crystal fibres, a special kind of microstructures with a two-dimensional periodic cross-section. The core of this fibre, which has dimension in the microscale, can be filled with gases. Hence, gases are confined in a small cross-section area over relatively long propagation distance. Therefore, nonlinear interactions between powerful light pulses and gases can be dramatically enhanced. Because of this strong interaction, the properties of this optical pulse will be drastically changed. For instance, the pulse central frequency can be drastically shifted to lower frequencies due to Raman effect or to higher frequencies because of partial ionization of the gas. Having a wide range of gases with different physical properties, various applications can be developed using this kind of microstructures.

For more information: Microstructure Nonlinear Optics (MNO) group

Selected publications
  1. Mohammed F. Saleh, Claudio Conti, and Fabio Biancalana, “Anderson localization and optical-event horizons in rogue-soliton generation",  Opt. Express 25, 5457-5465 (2017) 
  2. Mohammed F. Saleh et al., “Soliton dynamics in gas-filled hollow-core photonic crystal fibers" Topical Review, J. Opt. 18, 013002 (2016).
  3. Mohammed F. Saleh et al., “Tunable frequency-up/down conversion in gas-filled hollow-core photonic crystal fibers," Opt. Lett. 40, 4218 (2015).
  4. Mohammed F. Saleh et al., “Raman-induced temporal condensed matter physics in gas-filled photonic crystal fibers," Opt. Express 23, 11879-11886 (2015).
  5. Mohammed F. Saleh et al., "Plasma-induced asymmetric self-phase modulation and modulational instability in gas-filled hollow-Core photonic crystal fibers," Phys. Rev. Lett. 109, 113902 (2012), Editor’s Suggestion.
  6. Mohammed F. Saleh et al., "Theory of photoionization-induced blueshift of ultrashort solitons in gas-filled hollow-core photonic crystal fibers," Phys. Rev. Lett. 107, 203902 (2011).
  7. Mohammed F. Saleh et al., "Modal and polarization qubits in Ti:LiNbO3 photonic circuits for a universal quantum logic gate," Opt. Express 18, 20475-20490 (2010).
  8. Mohammed F. Saleh et al., "Modal, spectral, and polarization entanglement in guided-wave parametric down-conversion" Phys. Rev. A 79, 053842 (2009). Co-published in Virtual Journal of Quantum Information, June 2009. 

Mohammed F. Saleh has become the Royal Society of Edinburgh Research Fellow at Heriot-Watt University in 2014. He was a postdoctoral researcher at Max Planck Institute for the Science of Light in Germany (2010-2014). He has obtained a PhD in Electrical Engineering from Boston University in USA (2010), a MSc in Engineering Physics (2004), and a BSc with Honours in Electrical Engineering (2000) both from Alexandria University in Egypt.