Abstract
Two-photon absorption (TPA) spectroscopy of organic dyes is an attractive field for different purposes. TPA upconversion lasing in dye doped polymers has recently been demonstrated.1 TPA limits switching efficiency of polymer waveguide devices.2 TPA is an important photophysic issue in the field of two-photon laser microscopies.3 However, TPA are apparently difficult to interpret in the case of noncentrosymetric stilbene dyes.4
© 1997 Optical Society of America
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