Institute of Thin Film Technology and Microsensorics

Teltow, Germany

Institute of Thin Film Technology and Microsensorics

Teltow, Germany

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Gritsai Y.,Institute of Thin Film Technology and Microsensorics | Goldenberg L.M.,Institute of Thin Film Technology and Microsensorics | Goldenberg L.M.,Wildau University of Applied Sciences | Stumpe J.,Fraunhofer Institute for Applied Polymer Research
Optics Express | Year: 2011

Large aspect ratio 3D microstructures (arrays of square posts and linear rectangular gratings) fabricated in a number of azobenzene-containing materials by soft lithography were manipulated by a single beam of polarized light. The materials exhibited different response to the beam orientation and the direction of light polarization. An elongation of the square posts both along and perpendicular to the polarization plane was observed depending on material. Reversibility of the deformation has been demonstrated. Broadening of the hills, amplitude and shape changing were observed for linear gratings. A slanted expose led to the blazed asymmetric structures. Some aspects of light-induced deformation mechanisms in azobenzene-containing materials are discussed. The approach developed in the paper can be useful both for the understanding of mass transport mechanism in azobenzene-containing materials and for the fabrication of diffracted optical structures. © 2011 Optical Society of America.


Goldenberg L.M.,Wildau University of Applied Sciences | Lisinetskii V.,Wildau University of Applied Sciences | Gritsai Y.,Institute of Thin Film Technology and Microsensorics | Stumpe J.,Fraunhofer Institute for Applied Polymer Research | Schrader S.,Wildau University of Applied Sciences
Laser Physics Letters | Year: 2013

For the first time the fabrication of DFB laser devices based on polarization gratings in azobenzene-containing materials has been exploited. The gratings were inscribed by polarization holography in a layer of an azobenzene oligomer doped with a fluorophore (laser dye pyridine 1 or pyridine 2). The single step inscription of a polarization grating in this layer leads directly to a DFB laser device. The devices exhibited a lasing threshold of about 0.2-0.3 mJ cm-2. © 2013 Astro Ltd.


Goldenberg L.M.,Wildau University of Applied Sciences | Lisinetskii V.,Wildau University of Applied Sciences | Gritsai Y.,Institute of Thin Film Technology and Microsensorics | Stumpe J.,Fraunhofer Institute for Applied Polymer Research | Schrader S.,Wildau University of Applied Sciences
Optical Materials Express | Year: 2012

A distributed-feedback laser, operating in the spectral range of 590-670 nm is reported. The laser device is based on surface relief grating providing a second order DFB structure. The surface relief grating is inscribed in an azobenzene-containing material and an active layer realized in high refractive index poly(phenylquinoxaline) matrix. It is shown that the design of laser device provides for the possibility of simple replacement of an active layer. This allows, in particular, laser wavelength tuning without rewriting of the surface relief grating. ©2011 Optical Society of America.


Goldenberg L.M.,Wildau University of Applied Sciences | Lisinetskii V.,Wildau University of Applied Sciences | Gritsai Y.,Institute of Thin Film Technology and Microsensorics | Stumpe J.,Fraunhofer Institute for Applied Polymer Research | Schrader S.,Wildau University of Applied Sciences
Advanced Materials | Year: 2012

Distributed feedback (DFB) lasers are produced directly in fluorescent azobenzene-containing materials using a single holographic optical step. Surface relief grating capable of producing images in fluorescence microscopy can be holographically formed in a number of materials. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Konig T.,Albert Ludwigs University of Freiburg | Goldenberg L.M.,Institute of Thin Film Technology and Microsensorics | Kulikovska O.,Fraunhofer Institute for Applied Polymer Research | Kulikovsky L.,Institute of Thin Film Technology and Microsensorics | And 2 more authors.
Soft Matter | Year: 2011

We report on the fabrication and characterisation of a novel type of hybrid azo-modified photosensitive polymer film with a nanoscale metallic structuring integrated into the substrate. The metal structures permit to generate surface plasmon near fields when irradiated by UV-light from the rear without directly illuminating the polymer. This allows establishment of a localized, complex-shape intensity distribution at sub-wavelength resolution with a corresponding impact on the photosensitive polymer. The possibilities of exploiting this setup are manifold. We find that just by using the change of polarization of the incident light as means of control, the topography can be driven to change between various patterns reversibly. These results are confirmed by numerical simulations and compared with in situ recorded topography changes. © 2011 The Royal Society of Chemistry.


Goldenberg L.M.,Institute of Thin Film Technology and Microsensorics | Kulikovsky L.,Institute of Thin Film Technology and Microsensorics | Gritsai Y.,Institute of Thin Film Technology and Microsensorics | Kulikovska O.,Fraunhofer Institute for Applied Polymer Research | And 2 more authors.
Journal of Materials Chemistry | Year: 2010

An extremely high rate of holographic surface relief grating inscription has been achieved in materials based on a solid state ring-opening reaction of an oxirane with amino substituted azobenzenes. A number of effective formulations based on various oxirane derivatives and different aminoazobenzene derivatives has been prepared. For one of the best formulations, a low molecular weight three-armed azobenzene derivative has been separated in a pure form. This three-armed azobenzene derivative exhibited the highest inscription rate. © 2010 The Royal Society of Chemistry.


Sakhno O.V.,Fraunhofer Institute for Applied Polymer Research | Gritsai Y.,Institute of Thin Film Technology and Microsensorics | Stumpe J.,Fraunhofer Institute for Applied Polymer Research
Laser Physics Letters | Year: 2014

In the present work we report low-threshold distributed feedback (DFB) lasing from electrically tunable holographic polymer-liquid crystal transmission gratings of POLIPHEM type doped with pyrromethene 567. Due to their uniform droplet-free micro-morphology, the POLIPHEM gratings possess high diffraction efficiency and excellent optical quality. Second-order lasing with a threshold of ∼0.8 μJ/pulse and a bandwidth of ∼1 nm was achieved under the excitation of a frequency-doubled Nd:YAG laser operating at 532 nm. The laser emission wavelength was tuned from 572-625 nm by varying the grating period. Application of an electric field switches off or tunes the lasing intensity. An electrically-induced blue-shift of the output laser emission was observed. © 2014 Astro Ltd.


Smirnova T.N.,Ukrainian Academy of Sciences | Sakhno O.V.,Fraunhofer Institute for Applied Polymer Research | Fitio V.M.,Lviv Polytechnic | Gritsai Y.,Institute of Thin Film Technology and Microsensorics | Stumpe J.,Fraunhofer Institute for Applied Polymer Research
Laser Physics Letters | Year: 2014

This letter reports on the optimized design and operation performance of a second order distributed feedback (DFB) dye laser based on an active organic waveguide with a volume Bragg grating. The DFB gratings were inscribed holographically in a dye-doped organic nanocomposite containing high refractive index inorganic nanoparticles. In this work we experimentally investigated and theoretically analyzed the influence of waveguide and grating parameters on the spectral and energy characteristics of this kind of DFB laser in order to obtain a narrow-band emission of low divergence. We will show that a tailored improvement of the waveguide and grating parameters provides a low-threshold laser emission in the spectral range of 570-620 nm with a linewidth of less than 0.05 nm and an output beam profile close to a Gaussian distribution. © 2014 Astro Ltd.


Goldenberg L.M.,Institute of Thin Film Technology and Microsensorics | Kulikovsky L.,Institute of Thin Film Technology and Microsensorics | Kulikovska O.,Fraunhofer Institute for Applied Polymer Research | Tomczyk J.,Fraunhofer Institute for Applied Polymer Research | Stumpe J.,Fraunhofer Institute for Applied Polymer Research
Langmuir | Year: 2010

The very effective significant corrugation of a film surface (SRG) formation in the novel azobenzene-containing materials with three azobenzene units was investigated. The materials were prepared by amide formation through reaction of 1,3,5-benzenetricarbonyl trichloride (BTC) with amino-substituted azobenzene derivative in anhydrous dimethoxyethane at room temperature in the presence of triethylamine in analogy to the reaction of BTC and aniline. The thickness of the films was in the range of 50-2000 nm as measured by profilometer. The photo-induced orientation was investigated by exposing the films to the linearly polarized light of 488 nm with spatially homogeneous intensity of 300 mW cm -1. The formation of three-armed 4-aminoazobenzene (AAB) product was proved by ESI-mass spectroscopy. While the inscription rate for the latter polymer material becomes zero as the film thickness approaches 100 nm, the inscription rate of 0.0027min -1 was observed for the material based on BTC + AAB.


Goldenberg L.M.,Institute of Thin Film Technology and Microsensorics | Gritsai Y.,Institute of Thin Film Technology and Microsensorics | Stumpe J.,Institute of Thin Film Technology and Microsensorics | Stumpe J.,Fraunhofer Institute for Applied Polymer Research
Journal of Optics | Year: 2011

Very efficient holographic surface relief grating inscription has been demonstrated using an He-Ne laser in an azobenzene-containing material. Alternatively other lasers such as an Ar+ laser at 488nm and a DPSS laser at 532nm were also successfully used for inscription in the same material. © 2011 IOP Publishing Ltd.

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