lasers and laser safety non-linear optics optical metrology laser-based environmental monitoring photonics.

Light propagation in photorefractive media The interaction of light with photorefractive LiNbO3 and BaTiO3 is experimentally and theoretically investigated to enhance the understanding of soliton formation and information storage in self-defocusing media. New light controlled optical devices for future optical communications and computing systems will be developed using this knowledge. Laser frequency stabilisation and application Stabilisation of the frequency of visible lasers by saturated absorption spectroscopy is explored with the aim of improving the accuracy of optical frequency references used for metrology. These stable frequency sources are used to interferometrically measure concentrations of wanted and unwanted gases in the environment. Optical characterisation of light emitting quantum structures The optical properties of quantum dots and nanoparticles are experimentally and theoretically investigated to determine the key physical parameters that control their emission wavelengths. Of special interest is the enhancement of local light fields on the particles by surface plasmon resonances.

Jones MW, Jaatinen EA, Michael GJ, (2011) Propagation of low-intensity Gaussian fields in photorefractive media with real and imaginary intensity-dependent refractive index components, Applied Physics B: Lasers and Optics p405-411 Liu H, Zheng Z, Yang D, Ke XB, Jaatinen EA, Zhao J, Zhu HY, (2010) Coherent interfaces between crystals in nanocrystal composites, ACS Nano p6219-6227 Shortell M, Liu H, Zhu HY, Jaatinen EA, Waclawik ER, (2010) Formation of one-dimensional capped ZnO nanoparticle assemblies at the air/water interface, Langmuir: the ACS journal of surfaces and colloids p14472-14478 Chen X, Zheng Z, Ke XB, Jaatinen EA, Xie T, Wang D, Guo C, Zhao J, Zhu HY, (2010) Supported silver nanoparticles as photocatalysts under ultraviolet and visible light irradiation, Green Chemistry p414-419 Jaatinen EA, Hopper D, Back J, (2009) Residual amplitude modulation mechanisms in modulation transfer spectroscopy that use electro-optic modulators, Measurement Science and Technology p1-8 McConnell S, Jaatinen EA, (2009) Minimum refractometrically detectable concentrations of single atmospheric gases and simple mixtures with a Sagnac interferometer, Applied Optics p3481-3489 Sando D, Jaatinen EA, Devaux F, (2009) Reversal of degradation of information masks in lithium niobate, Applied Optics p4676-4682 Zhu HY, Chen X, Zheng Z, Ke XB, Jaatinen EA, Zhao J, Guo C, Xie T, Wang D, (2009) Mechanism of supported gold nanoparticles as photocatalysts under ultraviolet and visible light irradiation, Chemical Communications p7524-7526 Jones M, Jaatinen EA, (2008) Transition from intensity dependent absorption to transparency in Ce:BaTiO3, Optical Materials p122-125