Light manipulating vector polyphotochromatic behavior in organic polarization-sensitive materials

Induction of the vector polyphotochromism in side-chain azopolymers

“…Unlike this in some high-efficient polarization-sensitive materials obtained by us, we have observed the anomalous kinetics of photoanisotropy induction after reaching its maximum value when material is exposed by actinic linearly polarized radiation and simultaneously is probed by monochromatic nonactinic linearly polarized light beam [11], [12] and [13] the intensity of the transmitted probing beam starts decreasing with radiant exposure of inducing light increasing and almost reaches zero for the given wavelength of the probing beam ( Figure 1, curve 2). The intensity of the probing beam passing through the exposed material essentially depends on radiant exposure of the inducing light, on a wavelength of the probing beam and on the thickness of the material film.…”

“…It was shown [11], [12] and [13] that this phenomenon has purely vector nature because the transmission of the material is practically unchanged at different radiant exposures during probing by nonpolarized light. However, an essential change in transmission was observed under probing the sample by linearly polarized nonactinic light.…”

Photoanisotropy in polarization-sensitive polymer materials based on the media with covalently-bonded components

“…The preliminary results of the investigation of this phenomenon were already presented. [11][12][13] In Ref. [12,13] we used the high-efficient polarization-sensitive material which is a solid solution by its compositions based on MPY-NH 4 the ammonium salt of the polyhydric acid azodye Mordant Pure Yellow [also known as Mordant Yellow 26 (MY-26)] in the matrix of photogelatin.…”

“…[4][5][6][7][8][9][10] Unlike this in some high-efficient polarization-sensitive materials obtained by us, we have observed the anomalous kinetics of photoanisotropy induction after reaching its maximum value when material is exposed by actinic linearly polarized radiation and simultaneously is probed by monochromatic nonactinic linearly polarized light beam. [11][12][13] After reaching the maximum the intensity of the transmitted probing beam starts decreasing with radiant exposure of inducing light increasing and almost reaches zero for the given wavelength of the probing beam ( Figure 1, curve 2). The intensity of the probing beam passing through the exposed material essentially depends on radiant exposure of the inducing light, on a wavelength of the probing beam and on the thickness of the emulsion layer.…”

“…The intensity of the probing beam passing through the exposed material essentially depends on radiant exposure of the inducing light, on a wavelength of the probing beam and on the thickness of the emulsion layer. It was shown [11][12][13] that this phenomenon has the purely vector nature because the transmission of the material during probing by nonpolarized light is practically unchanged at different radiant exposures. However, an essential change in transmission was observed under probing the sample by linearly polarized nonactinic light.…”