caa a22 4500 445370890 CHVBK 20180317142946.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s00340-011-4547-7 doi (NATIONALLICENCE)springer-10.1007/s00340-011-4547-7 Two-photon-induced birefringence in azo-dye bearing polyimide; the birefringence changes versus the writing power [Elektronische Daten] [A. Kozanecka-Szmigiel, K. Switkowski, E. Schab-Balcerzak, E. Grabiec] Ultra-short high-intensity light pulses were utilized to induce the optical birefringence in a polyimide material possessing the azo-dye covalently bonded to the main chain. The obtained results showed that a two-photon absorption process was involved in a creation of the sample birefringence which, to the best of our knowledge, was not previously reported for polyimide materials. The growths and decays of birefringence were examined as functions of the pulse intensities. No damage to the material during the illumination process was detected in a wide range of optical powers applied. High birefringence level of the order of 0.005 was measured. The Author(s), 2011 Kozanecka-Szmigiel A. Faculty of Physics, Warsaw University of Technology, 75 Koszykowa Str., 00-662, Warsaw, Poland aut Switkowski K. Faculty of Physics, Warsaw University of Technology, 75 Koszykowa Str., 00-662, Warsaw, Poland aut Schab-Balcerzak E. Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Sklodowska Str., 41-819, Zabrze, Poland aut Grabiec E. Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Sklodowska Str., 41-819, Zabrze, Poland aut Applied Physics B Springer-Verlag 105/4(2011-12-01), 851-855 0946-2171 105:4<851 2011 105 340 https://doi.org/10.1007/s00340-011-4547-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-011-4547-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kozanecka-Szmigiel A. Faculty of Physics, Warsaw University of Technology, 75 Koszykowa Str., 00-662, Warsaw, Poland aut NATIONALLICENCE 700 1- Switkowski K. Faculty of Physics, Warsaw University of Technology, 75 Koszykowa Str., 00-662, Warsaw, Poland aut NATIONALLICENCE 700 1- Schab-Balcerzak E. Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Sklodowska Str., 41-819, Zabrze, Poland aut NATIONALLICENCE 700 1- Grabiec E. Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Sklodowska Str., 41-819, Zabrze, Poland aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 105/4(2011-12-01), 851-855 0946-2171 105:4<851 2011 105 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer