Solving an old puzzle: fine structure of diffraction spots from an azo-polymer surface relief grating

@article{Jelken2019SolvingAO,
  title={Solving an old puzzle: fine structure of diffraction spots from an azo-polymer surface relief grating},
  author={Joachim Jelken and Carsten Henkel and Svetlana A Santer},
  journal={Applied Physics B},
  year={2019},
  volume={125}
}
We report on the experimental and theoretical interpretation of the diffraction of a probe beam during inscription of a surface relief grating with an interference pattern into a photo-responsive polymer film. For this, we developed a set-up allowing for the simultaneous recording of the diffraction efficiency (DE), the fine structure of the diffraction spot and the topographical changes, in situ and in real time while the film is irradiated. The time dependence of the DE, as the surface relief… 

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References

SHOWING 1-10 OF 41 REFERENCES

In-situ atomic force microscopy study of the mechanism of surface relief grating formation in photosensitive polymer films

When photosensitive azobenzene-containing polymer films are irradiated with light interference patterns, topographic variations in the film develop that follow the local distribution of the electric

Analyses of the Diffraction Efficiencies, Birefringence, and Surface Relief Gratings on Azobenzene-Containing Polymer Films

Dynamical experimental studies on the diffraction efficiencies and the formation of birefringence grating and surface relief grating on doped and/or covalently bonded azobenzene derivatives

Structuring of photosensitive material below diffraction limit using far field irradiation

In this paper, we report on in-situ atomic force microscopy (AFM) studies of topographical changes in azobenzene-containing photosensitive polymer films that are irradiated with light interference

Light induced reversible structuring of photosensitive polymer films

In this paper we report on photoswitchable polymer surfaces with dynamically and reversibly fluctuating topographies. It is well known that when azobenzene containing polymer films are irradiated

Graphene multilayer as nanosized optical strain gauge for polymer surface relief gratings.

Graphene can be utilized as a nanoscopic probe in order to characterize local opto-mechanical forces generated within photosensitive azobenzene containing polymer films and it is deduced that the internal pressure in the film due to grating formation can exceed 1 GPa.

Photosensitive response of azobenzene containing films towards pure intensity or polarization interference patterns

In this paper, we report on differences in the response of photosensitive azobenzene containing films upon irradiation with the intensity or polarization interference patterns. Two materials are

Probing opto-mechanical stresses within azobenzene-containing photosensitive polymer films by a thin metal film placed above.

This study is proposing a method to probe opto-mechanical stresses within polymer films by characterizing the mechanical response of thin metal films (10 nm) deposited on the photosensitive polymer by studying the penetration of a metal layer within the polymer.

Thermodynamic theory of light-induced material transport in amorphous azobenzene polymer films.

A new thermodynamic approach is proposed that explains a number of experimental findings including the light-induced deformation of free-standing films and the formation of surface relief gratings for main inscription geometries.

Azopolymer Holographic Diffraction Gratings: Time Dependent Analyses of the Diffraction Efficiency, Birefringence, and Surface Modulation Induced by Two Linearly Polarized Interfering Beams

Dynamical experimental studies of the diffraction efficiency, birefringence, and surface relief modulation were carried out on functionalized azopolymer films of p(DR1M-co-MMA) with a 12% mole

Laser-Induced Dynamic Gratings

The invention ofthe laser 25years ago resulted in powerfullight sources which led to the observation of unexpected and striking phenomena. New fields of science such as holography and nonlinear