School of Mechanical, Electrical and Manufacturing Engineering


Dr Pablo Ruiz PhD

Photo of Dr Pablo Ruiz

Reader in Applied Optics



Pablo D. Ruiz received his BA in Physics in 1996 from the National University of Salta and PhD in 2002 from the Rosario Institute of Physics at the National University of Rosario, Argentina. He joined Loughborough University in 2002, where he currently holds a readership in Applied Optics.




His research interests include interferometry, lidar, speckle metrology, optical coherence tomography, synthetic aperture interferometry, elastography and the application of optical methods in experimental mechanics. Some examples of multidisciplinary research include Material Science (thin films response to environmental conditions), Renewable Energies (photovoltaic encapsulant materials), and Strain Tomography and material characterization with inverse methods (cornea, Virtual Fields Method).




Dr Ruiz held a Royal Society Industry Fellowship hosted first by Phase Vision Ltd and then Renishaw to develop ‘snapshot’ areal profilometry, i.e. fast measurement of surface shape without any sort of scanning required. His current research is focused on novel approaches to Hyperspectral Interferometry; Synthetic Aperture Interferometry; Frequency Scanning Interferometry ranging of rough surfaces; and the study of propagation of solitons in mechanical waveguides.


Research Interests and Activities

  • Optical methods for non-destructive applications in mechanics of materials: 
    • Speckle Interferometry
    • Moiré Interferometry
    • Phase Contrast Optical Coherence Tomography
    • Tilt scanning Interferometry
    • Wavelength Scanning Interferometry.
  • Numerical fringe analysis: 
    • Phase shifting algorithms
    • 2D and 3D phase unwrapping methods.
    • Speckle noise reduction
  • Mechanics of materials: 
    • Strains in bonded joints
    • Structural integrity of composites
    • Environmental stress/strain response of oriental lacquer (urushi) thin films

External Activities

  • Professional affiliations: Member of the Institute of Physics (IoP) Member of the Optical Society of America (OSA).
  • Invited lecture at the symposium “Advanced Imaging Methods for Accurate Deformation, Motion and Shape Measurements: Recent Developments and Applications” which will be held October 5-7, 2009 at the Hilton-Convention Center hotel in downtown Columbia, South Carolina, USA.
  • Invited to contribute a chapter in the book “Advances in Speckle Metrology and Related Techniques”, edited by Prof. Guillermo H. Kaufmann, Wiley, 2009. Quoting the editor: “The book proposal consisted in collecting the new and broad materials published since 2002 in specialized journals and conferences dealing with the speckle phenomena and then selecting the topics showing the greatest promises.”
  • Invited speaker at the School of Physical Sciences seminars,University of Kent, Canterbury, February 2009. Topic presented: “Phase contrast optical coherence tomography for 3D metrology applications”.
  • Member of the Scientific and Organizing Committee for the BSSM seminars on "Experimental Mechanics in biological tissues”,Loughborough, UK, 23rd June 2009.
  • Member of the Scientific Committee in Speckle 2010, La Plata,Argentina, September 2010.
  • Member of the Scientific and Organizing Committees in Photomechanics 08 International Conference, Loughborough, UK, July 2008.
  • Chairman of the Fringe Analysis Special Interest Group (FASIG),
  • Chairman at the FASIG session in Photon08, Herriot Watt University,Edinburgh, August 2008.
  • Chairman at ICEM12 (2004) and ICEM13 (2007) International Conferences on Experimental Mechanics; Member of the Scientific Committee of Photomechanics 2008, Loughborough, July 2008.
  • Invited paper: Rank Prize Funds “Mini-symposium on Optical Aspects of Non-Destructive Testing”, Cumbria, 19-22 May 2008.
  • Journal referee for: Optics Letters, Applied Optics, Optical Engineering Letters, Optical Engineering, Measurement Science Technology, Optics Communications, Journal of Holography and Speckle and Optics & Laser Technology.
Current funding
  • RCIF funding (£70k) Swept Source Optical Coherence Tomography system for depth-resolved material analysis and characterization.
  • EPSRC EP/F02861X/1 (£439k), “3D strain field mapping of scattering media using Wavelength Scanning Interferometry with application to damaged composites”. 3Yrs, starting date: 01/10/2008.
  • EPSRC EP/E050565/1 (£211k), “Depth-resolved phase contrast metrology in life sciences and engineering”. 3Yrs, starting date: 01/08/2007.


  • 2007: Best paper in the oral sessions at the Speckle 06 conference (Nimes, France, Sept. 06) attended by over 150 delegates.
  • 2002: British Council and Fundación Antorchas postdoctoral studentship. (Loughborough University)