About us

Craig Stacey
Craig Stacey MPhys PhD CEng CPhys
CEO & Consultant
Laser Systems
Roy Clarke
Roy Clarke BSc PhD CEng CPhys
Director and Consultant
Electro-optics and Infrared
Chris Stace
Chris Stace BSc PhD
Director and Consultant
Optical Design and Simulation

Craig Stacey MPhys PhD CEng CPhys

CEO and Consultant – Laser Systems

Craig has over 16 years’ experience in photonics applications in defence and security. After graduating from Southampton University in 1999 in Physics with Space Science, he joined the UK MOD’s Defence Evaluation and Research Agency (DERA), which latterly became QinetiQ, as a Scientific Officer. During this time, he undertook research into hollow optical waveguides, FTIR spectroscopy, Lidar and coherent fibre laser combining and also completed a PhD in high power erbium doped fibre amplifiers. In 2006 Craig joined BAE Systems Advanced Technology Centre in Bristol, and was a Principal Scientist from 2009 until 2015. While there, he led research in various photonics-related areas including: free-space optics and fibre optics and laser directed energy projects, covering laser dazzle, DIRCM and LDEW. This covered investigations into novel laser concepts and high power fibre optics and has led to a number of UK and world firsts and 11 patents. Competent in optical design using Zemax and LabVIEW for experimental control and data acquisition, Craig is also involved in most stages of project life cycle, from proposal writing, risk assessment and costing to project management and delivery.


C.D. Stacey, C. Stace, R.G. Clarke, “A Multi-Spectral Laser Beam Combiner Covering UV to Mid-IR”, 15th Electro-Optics and Infrared Conference, Defence Academy, Shrivenham, 20th-22nd June (2016)

S. Lake, J. Rew, C D Stacey and J.P. Sargent, “The ‘speckleometer’: a compact, portable surface roughness measurement unit based on angular speckle correlation”, Insight – Non-Destructive Testing & Condition Monitoring, Vol. 57, No.9, (2015)

C.D. Stacey, C. Stace, R.G. Clarke, “High power operation of an ultra-broadband spectral beam combiner”, OPTRO 2014, Paper 2966156, Jan 28-31 2014, Paris, France (2014)

C.D. Stacey, C. Stace, R.G. Clarke, “Ultra-broadband Spectral Beam Combiner Spanning over Three Octaves”, Applied Optics, Vol. 52, No.29, pp.7200-7205 (2013)

J.R. Pugh, J. Silva, J.L. Stokes, C.D. Stacey, G.R. Nash, J.G. Rarity, I.D. Lindsay and M.J. Cryan, “Focusing Bandwidth of Flat Lenses in the Mid-Infrared”, IET Micro and Nano Letters, Vol. 7, Iss. 11, pp.1105-1107 (2012)

J. Pugh, J. Stokes, G. Nash, C.D. Stacey, M. Cryan, “Plasmonic Beam Shaping in the Mid-Infrared”, Proc. Frontiers in Optics 2011/Laser Science XXVII, 19th October 2011, San Jose, US (2011)

V. Scarnera, B. Richards, A. Jha, G. Jose, C. Stacey, “Green up-conversion in Yb3+-Tb3+ and Yb3+-Tm3+Tb3+ doped fluoro-germanate bulk glass and fibre”, Optical Materials, Vol.33, Issue 2, 159-163, December 2010 (2010)

C.D. Stacey, C. Clarke, R. G. Clarke, D. W. Charlton, “Demonstration of multimode interference effect for PCF connectors”, (Invited paper), 7714-27, SPIE Photonics Europe 2010, Brussels, Belgium. 12-16th April 2010.

Craig Stacey, Christopher Clarke, Roy Clarke, David Charlton, “Multimode self-imaging enables novel microstructured fiber connectors”, SPIE Newsroom 12th April 2010, DOI: 10.1117/2.1201003.002669

D.C. Jones, A.J. Turner, A.M. Scott, S.M. Stone, R.G. Clarke, C. Stace, C.D. Stacey, “A multi-channel phase locked fibre bundle laser”, SPIE Proc., Photonics West 2010, San Francisco, USA. 25th-29th Jan 2010

V. Scarnera, B. Richards, A. Jha, C.D. Stacey, “Up-conversion tuneable green fibre laser”, SGT Conference 2009, 16th-18th September 2009, Lancaster University, UK.

C.D. Stacey et al, ”Visible Fibre Lasers for EOCM”, 7th EO/IR Symposium, 15th-17th July 2009, Defence Academy, Shrivenham, UK.

C.D. Stacey et al, ”Laser DEW Technology”, 3rd Electronic Warfare Symposium, 5th-6th Dec 2007, Defence Academy, Shrivenham, UK.

C.D.Stacey, R.M.Jenkins, J.Banerji and A.R.Davis, “Demonstration of fundamental mode propagation in highly multimode fibre for high power EDFAs”, Optics Communications, vol.269, pp 310-314, 2007

D.C.Jones, C.D.Stacey, A.M. Scott, “Phase stabilisation of a large-mode-area ytterbium-doped fibre amplifier”, Optics Letters, Vol.32, No.5, 2007

R M Jenkins, K D Ridley and C D Stacey, “Measurements of Speckle Fields with a Multimode Local Oscillator”, DTC conference paper 2006, 3rd EMRS DTC Conference July 2006, Edinburgh, UK

C.D.Stacey and R.M.Jenkins, “Demonstration of fundamental mode propagation in highly multimode fibre for high power EDFAs”, paper CJ-16-WED, Technical Digest CLEO Europe/EQEC 2005 Munich 2005

R M Jenkins, C D Stacey and K D Ridley, “Measurements of Speckle Fields with a Multimode Local Oscillator”, DTC conference paper 2005, 2nd EMRS DTC Conference July 2005, Edinburgh, UK.

C.D.Stacey, “Measurements of speckle fields with a mode-tuneable local oscillator”, Rank Prize Funds Mini-Symposium on Orbital Angular Momentum of Photons, Helical Beams and Optical Vortices, 12th-15th May 2003, Grasmere, UK

Roy Clarke BSc PhD CEng CPhys

Director and Consultant – Electro-optic and Infrared Engineering

Roy has over 35 years’ experience in optical engineering, both in systems design & evaluation and R&D. After gaining a B.Sc. (Honours) degree in physics at the University of Leeds he stayed on to obtain a Ph.D. which involved the design, development, and launch of a high altitude balloon borne, superfluid helium cooled, Fourier transform spectrometer for far infrared astronomy. Following a short spell of teaching and lecturing Roy joined British Aerospace in 1980 as an optical engineer, specialising in electro-optic sensors, infrared systems and metrology and alignment. Throughout his career, he served as engineer, consultant/trouble-shooter and project manager, on projects ranging from the design & development of optical test methods and equipment to systems design on major missile programmes. His experience includes: optics design, production and testing, hyperspectral imaging, systems modelling, technical auditing, design reviewing, and project management. He has led numerous successful multi-million pound bids for both national and international programmes. On leaving BAE Systems in 2015, as the Technical Lead for Photonics in the company’s Advanced Technology Centre, he was responsible for the strategic direction and delivery of the company’s optical engineering R&D. Roy was also a resident columnist in the BAE Systems company technical magazine “Technical Foresight”.


CD Stacey, C Stace, RG Clarke, “High power operation of an ultra-broadband spectral beam combiner”, Proc. OPTRO 2014 – 6th International Symposium on Optronics in Defence & Security – Paris, France (2014)

CD Stacey, RG Clarke, C Stace, “Ultra-broadband spectral beam combiner spanning over three octaves”, Applied Optics, Vol. 52, No 29, pp.7200-7205 (2013)

CD Stacey, C Clarke, RG Clarke, DW Charlton, ”Demonstration of Multimode Interference Effect for PCF Connectors”, SPIE 7714-27 SPIE Photonics Europe, Brussels (2013)

DC Jones, AJ Turner, AM Scott, SM Stone, RG Clarke, C Stace, CD Stacey A multi-channel phase-locked fibre bundle laser, Proc. SPIE 7580, 75801V Fiber Lasers VII: Technology, Systems, and Applications, San Francisco, Ca, USA (2010)

RG Clarke, “The SIRUS EO Signature Prediction Model”, 7th Shrivenham EO & IR Conference (2010)

GJ Bishop, RG Clarke, SJ Clement, WA Hubbard, MC Williams, DR Hayter, G Innes, “MultiSpectral Polarimetric Detection of Difficult Targets” , 6th EMRS DTC Technical Conference – Edinburgh (2009)

R Clarke, L Cooke, J Bagshaw, “Aerospace Applications of Industrial Lasers”, (Invited talk) Proc. SPIE 6157, Workshop on Laser Applications in Europe (2009)

C Stace, CJC Harrison, RG Clarke, DC Jones, AM Scott, Fibre Bundle Lasers and their Applications, 1st EMRS DTC Technical Conference – Edinburgh (2005)

RG Clarke Active Multispectral Imaging 1st EMRS DTC Technical Conference – Edinburgh (2004)
DC Jones, A.M. Scott, S Clark, C Stace, RG Clarke Beam steering of a fiber-bundle laser output using phased array techniques, Proc. SPIE 5335, 125; Fiber Lasers: Technology, Systems, and Applications – San Jose, Ca, USA (2004)

K Schafer et al, “Nonintrusive optical measurements of aircraft engine exhaust emissions and comparison with standard intrusive techniques”, APPLIED OPTICS Vol. 39, No. 3 (2000)

Chris Stace BSc PhD

Director and Consultant – Optical Design and Simulation

Chris has been an optical engineer for more than 25 years. Before that he studied nonlinear optical amplifiers for image processing at King’s College in London for his Doctorate. He has gathered considerable experience of the design and construction of optical and laser systems including optical image processors, free-space and fibre optic communications systems, camouflage and optical switches. Most recently, Chris was Chief Optical Design Engineer at BAE Systems Advanced Technology Centre. At LumOptica, Chris’ main technical role is as an optical designer using both the Zemax optical design package and the GLAD beam propagation model. He uses these tools to not only design optical components but also to simulate and troubleshoot the performance of optical systems.