Dr Willem Jellema
SRON and Delft University of Technology
Senior instrument scientist

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THz-TDS THz CW swept spextroscopy THz VNA THz FMCW KID optical and THz detector arrays THz FTS NIR swept laser spectroscopy Visual and NIR imaging and polarimetry SH wavefront sensing NIR Optical laser interferometry E-beam lithography (D)RIE micomachining (PÉ)CVD processing etc

Scientific focus and expertise:
Advanced optical instrumentation Long-wave diffractive optics Electromagnetic modelling Optical design and simulation Nanofabrication Straylight analysis Optical characterisation

Materials class:
Dielectrics Silicon (SiO2/Si/SiN) Thin metal films Superconducting films Metasurfaces (optical and mechanical)

Advanced optical instrumentation Space optics Commercial spin-off

Market Sector:
Non-destructive testing (process industry) Optical diagnostics (various) Communication (telecom)

RTO (Research and Technology Organisations)
PGR (Post-Graduate Researcher)

Special Interest Group(s):
Active Metamaterials
Mechanical Metamaterials
Modelling and AI-Design
Photonic Metamaterials

Horizon Scanning and Disruptive Concepts
Industry / KTN
Outreach and Education