OPD: Diffractive optics
Chair: G Love, University of Durham, UK

13:00	Recent advances in the design and fabrication of diffractive and micro-optical elements M R Taghizadeh, A J Waddie Heriot Watt University (UK)
13:30	Dynamic holographic wave-front references for interferometric optical testing M Neil, E Atad-Ettedgui^1, G D Love^2, B Boruah, D Henry^3 Imperial College London (UK) ^1Royal Observatory (UK) ^2University of Durham (UK) ^3UK Astronomy Technology Centre (UK)
13:45	Phase and Amplitude Errors in Digital Holograms A Georgiou, W A Crossland Cambridge University (UK)
14:00	Achromatic white light Bessel beams formed using a spatial light modulator A Wright, J Leach^1, E Esposito^2, G M Gibson^1, G McConnell^2, M J Padgett^1, J Girkin University of Strathclyde (UK) ^1University of Glasgow (UK) ^2Strathclyde Institute for Biomedical Science (UK) ^3University of Glasgow (UK)
14:15	Conical Diffraction M Berry, M Jeffrey University of Bristol (UK)