title: Fluorescence and phase-conjugated signals of organic materials.
abstract: The role of fluorescence has not always been fully understood in optical engineering experiments that are devoted to the generation of phase-conjugated waves from organic materials. It is pointed out that fluorescence can appear if the material absorbs at the wavelength of the excitation. Therefore proper experimental precautions should be taken in the detection of the intrinsic phase-conjugated signal.
authors.forename: T
authors.initials: T
authors.lastname: Keinonen
authors.forename: P
authors.initials: P
authors.lastname: Riihola
authors.forename: K E
authors.initials: KE
authors.lastname: Peiponen