Our People


Annette Koo

Acting Director and Chief Metrologist


Areas of expertise

  • Technical leadership and strategic oversight
  • Comparison analysis
  • Goniospectrophotometry, scattering distribution functions


  • PhD, Physics, 2005


Annette completed a physics PhD through Victoria University of Wellington in 2005 and then spent 3 years in Melbourne as a postdoctoral fellow at CSIRO and then at Monash University doing research into catalysts for solar hydrogen generation.

In 2008 she started at MSL as a research scientist, developing expertise in the measurement of light and human perception, including the design of MSL’s robot-based goniospectrophotometer and piloting the CCPR comparison of spectral transmittance.

Since late 2021 Annette has been the Chief Metrologist for MSL. The Chief Metrologist is a verifying authority for measurement standards under the National Standards Regulations 1976 in relation to the verification and reverification of any standard or standards of measurement. The main duty of the role is to ensure the integrity of the measurement system in New Zealand. In practice, the Chief Metrologist needs to be satisfied that measurement results provided by MSL are traceable to the SI (the International System of Units) and that measurements carried out in NZ by IANZ-accredited laboratories can be traceable to the SI by relying on verified measurement results supplied by MSL.

Professional activities

  • Member of the Metrology Society of Australasia
  • Represents MSL at the CCPR and is chairperson of task groups of the CCPR working group
  • Member of CIE technical committees


E Molloy, P Saunders and A Koo; Effects of rotation errors on goniometric measurements metrologia 59 (2022)

B D Hall and A Koo; Digital Representation of Measurement Uncertainty  a case study linking an RMO key comparison with a CIPM key comparison metrology 1 166–81 (2021)

T Quast, A Schirmacher, K-O Hauer and A Koo; Polarization properties and microfacet-based modelling of white, grey and coloured matte diffuse reflection standards journal of physics  conference series vol 972 (2018)

A Koo; 2017 Report on the consultative committee for photometry and radiometry key comparison of regular spectral transmittance 2010 (CCPR-K6.2010) Metrologia 54 02001–02001

C Strothkämper, A Ferrero, A Koo, P Jaanson, G Ged, G Obein, S Källberg, J Audenaert, F B Leloup, F M Martínez-Verdú, E Perales, A Schirmacher and J Campos; Multilateral spectral radiance factor scale comparison Appl. Opt. 56 (2017)

A Koo and J F Clare; On the equivalence of generalised least squares approaches to the evaluation of measurement comparisons Metrologia 49 340-348 (2012)

A Koo and J D Hamlin; Temperature and temporal dependence of neutral density transmittance standards metrologia 49 S68-S72 (2012)

R Brimblecombe, A Koo, G C Dismukes, G F Sweigers and L Spiccia; Solar driven water oxidation by a bioinspired manganese molecular catalyst, J. Am. Chem. Soc. 132 2892 (2010)

A Koo, J H Clare, K M Nield, A Deadman and E Usadi; Fluorescence of ceramic colour standards, Appl. Opt. 49 2376 (2010)

A Koo, G A Brooks and M Nagle; Nucleation and growth of Mg condensate during supersonic gas quenching, J. Crystal Growth  310 2659 (2008)

A Koo, F Budde, B J Ruck, H J Trodahl, A Bittar, A Preston and A Zeinert; Photoconductivity in nanocrystalline GaN and amorphous GaON, J. Appl. Phys. 99 034312 (2006)