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Please direct replies to: [log in to unmask] The seventh in the series of themed 'Frontiers of Science and Measurement' seminars entitled 'High Accuracy Spectroscopy for Metrology' will be held at NPL on Thursday, 21 March 2002. The meeting is co-sponsored by NPL and The Institute of Physics. The series is described on the NPL web site at http://www.npl.co.uk/npl/clubs/frontiers/fsmindex.html The programme is described below. The cost of this seminar is £30 + VAT. Registration is via the NPL e-store at http://www.npl.co.uk/e-store/ If you would like further information, or to display a poster, please contact Melanie Williams: [log in to unmask] > 10:00 > Arrival & Coffee > > 10.25 Chairman' s opening remarks Prof J Silver > > 10:30 > Optical frequency standards and measurement in Japan - feedback > from DTI sponsored "Trapped Ions for Measurement and Enterprise" > (TIME) scouting mission. > Dr Hugh Klein NPL, Dr David Knight, DK Research, Dr Mark Plimmer > BNM-INM and Professor J Silver, University of Oxford > > 11:30 > Optical frequency standards: molecules, atoms or ions? > Dr Mark Plimmer, BNM-INM > > 12:15 > Lunch & Posters > > 13:30 > Towards a precise measurement of the He+(2S) Lamb shift > Dr Malcolm Boshier,Sussex Centre for Optical and Atomic > Physics, Sussex University > > 14:05 > Photonic crystal fibres for frequency comb generation > Professor Jonathan Knight, BlazePhotonics Ltd > > 14:40 > Versatile Pulsed and Broad Band Sources > Professor Roy Taylor, Femtosecond Optics Group, Imperial College > > 15:15 > Absolute optical frequency measurements of trapped ion standards > Dr Helen Margolis, Fundamental and Wavelength Standards, NPL > > The technologies of ion traps and femtosecond combs are set to > revolutionise optical frequency measurement, with applications in > for example, spectroscopy and precise timing. Improvements in > frequency > measurement accuracy, unprecedented in other areas of metrology, are > expected. The aim of this meeting is to bring together scientists from > optics, atomic physics, spectroscopy and metrology to raise awareness > of new developments and activities and to discuss future potential and > applications. > > The meeting will include feedback from the November 2001 DTI sponsored > scouting mission to Japan `Trapped Ions for Measurement and > Enterprise' (TIME). The mission focused particularly on new > optical frequency > standards (for which trapped ions are strong candidates) and > measurement > of optical frequency standards using femtosecond comb laser systems. > There has been a "sea change" in optical frequency metrology > using these > measurement systems and ensuing technical developments are moving > quickly, with potential implications for telecommunications and > photonics, navigation and ultimately time measurement. The mission > examined what the UK and Japan have in common in this field and the > scope for future collaborations. It included visits to two national > laboratories, the National Metrology Institute of Japan (NMIJ) and the > Communications Research Laboratory (CRL), two companies > Anritsu and NTT, > and discussions with staff at the University of Electro-communications > and Kyoto University. >