Refractive femtosecond laser beam shaping for two-photon polymerization
Winfield, Richard J.
Crean, Gabriel M.
Three dimensional microstructure fabrication by two-photon polymerization is an established technique that normally uses single beam serial writing. Recently the use of a micro-optical element, to give multipoint beam delivery, was reported to give a degree of parallel processing. The authors describe an alternative approach to parallel processing using an axicon lens. This is a refractive element that, in combination with a high power microscope objective, efficiently transforms the laser beam from a Gaussian spot to an annulus. The authors demonstrate that the beam can polymerize a three dimensional shape, with nanoscale resolution. The use of more sophisticated refractive beam shaping is also discussed. (c) 2007 American Institute of Physics. (DOI:10.1063/1.2713787)
Microfabrication , Polymerization , Laser beams , Sol gel processing , Parallel processing , Materials fabrication
Winfield, R. J., Bhuian, B., O’Brien, S. and Crean, G. M. (2007) 'Refractive femtosecond laser beam shaping for two-photon polymerization', Applied Physics Letters, 90(11), pp. 111115. doi: 10.1063/1.2713787
© 2007 American Institute of Physics.This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Winfield, R. J., Bhuian, B., O’Brien, S. and Crean, G. M. (2007) 'Refractive femtosecond laser beam shaping for two-photon polymerization', Applied Physics Letters, 90(11), pp. 111115 and may be found at http://aip.scitation.org/doi/abs/10.1063/1.2713787