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Title: Two-photon-induced birefringence in azo-dye bearing polyimide; the birefringence changes versus the writing power
Authors: Kozanecka-Szmigiel, A.
Switkowski, K.
Schab-Balcerzak, Ewa
Grabiec, E.
Keywords: Engineering; Laser Technology; Photonics; Optics; Optoelectronics; Plasmonics and Optical Devices; Physical Chemistry; Physics; quantum optics
Issue Date: 2011
Citation: Applied Physics B, Vol. 105 (2011), s. 851-855
Abstract: 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.
DOI: 10.1007/s00340-011-4547-7
ISSN: 0946-2171
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