Holographic fabrication of polarization selective diffractive optical elements on azopolymer film

Tripathy, Sukant K.; Viswanathan, Nirmal K.; Balasubramanian, S.; Kumar, Jayant

doi:10.1002/1099-1581(200008/12)11:8/12<570::aid-pat7>3.0.co;2-k

Cited by 19 publications

(14 citation statements)

References 23 publications

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“…The increase in diffraction efficiency could be related to the creation of double refraction in the sample [8]. In our case it is less probable, since the system is centro-symmetrical.…”

Section: Resultsmentioning

confidence: 60%

Optically Induced Surface Relief Gratings in Polymer Films Doped With Sulphonyl Group Containing Azobenzene

Laizane¹,

Gustina²,

Kundziņš³

et al. 2010

Latvian Journal of Physics and Technical Sciences

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In holography, more attractive have become azobenzene compounds doped in a polymer matrix (host-guest polymer film) or chemically attached to the polymer. Azobenzene molecules exhibit reversible photoisomerization between trans-and cisisomers which can form a surface relief grating in the films. The authors investigate the holographic recording and formation of surface relief gratings in a host-guest polymer film with two original azobenzene compounds. Holographic recording with 325 nm laser light was performed in host-guest polymer films with the host being polymethylmetacrylate (PMMA) and the guest -15 wt% azobenzene molecules (A-45 or A-48). In both cases an increase in the diffraction efficiency at the beginning of the process could be related to the trans-cis-photoisomerization, while the second increase − to the formation of surface relief gratings. The systems with A-45 molecules reach a diffraction efficiency of 0.7%, and with A-48 molecules − of 0.24%. Also, the depth of surface relief gratings is greater in the films with A-45 (35 to 45 nm) than in those with A-48 (4 to 6 nm) molecules.

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“…The increase in diffraction efficiency could be related to the creation of double refraction in the sample [8]. In our case it is less probable, since the system is centro-symmetrical.…”

Section: Resultsmentioning

confidence: 60%

Optically Induced Surface Relief Gratings in Polymer Films Doped With Sulphonyl Group Containing Azobenzene

Laizane¹,

Gustina²,

Kundziņš³

et al. 2010

Latvian Journal of Physics and Technical Sciences

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“…At other word, the light-driving force from the azo chromophores to the polymer backbones is responsible for pattern erasing. 20,21 This photoinduced mass migration is sufficient only in the case of dye covalently linked to polymer and are negligible in the case of doped polymers. 18,22 C. Reversibility of pattern formation Observed formation and erasure of pattern at PMMAcoDR1 opens a way to production of medium with reversible pattern formation.…”

Section: B the Second Stage Of Polymer Modificationmentioning

confidence: 99%

Reversible patterning of poly(methylmethacrylate) doped with disperse Red 1 by laser scanning

Tůma

Lyutakov

Slepička

et al. 2013

Journal of Applied Physics

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Articles you may be interested inPlasma polymerized thin films of maleic anhydride and 1,2-methylenedioxybenzene for improving adhesion to carbon surfaces Structure and properties of carbon nitride thin films synthesized by nitrogen-ion-beam-assisted pulsed laser ablation J.Thermal imidization of fluorinated poly(amic acid) precursors on a glycidyl methacrylate graft-polymerized Si(100) surface J.Effect of temperature on carbon nitride films synthesized by ion-beam-assisted pulsed laser deposition Novel fabrication technique for 0.1 μm T-shaped gate with i-line negative resist and poly(methylmethacrylate)

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“…Light‐induced surface modulation is a unique attribute of azobenzene‐containing materials, based on which the photoisomerization of the azobenzene chromophores initiates mass transport over micrometer distances . This reversible process allows the construction of high‐quality surface relief gratings (SRG) by a facile and single step procedure (a wet process is not required) with potential applications that range from optical technology (holographic memories, diffractive optical elements, photonic components) to nanotechnology (micropatterning, nanopatterning) …”

Section: Introductionmentioning

confidence: 99%

“…INTRODUCTION Light-induced surface modulation is a unique attribute of azobenzene-containing materials, based on which the photoisomerization of the azobenzene chromophores initiates mass transport over micrometer distances. [1][2][3][4] This reversible process allows the construction of high-quality surface relief gratings (SRG) by a facile and single step procedure (a wet process is not required) with potential applications that range from optical technology (holographic memories, diffractive optical elements, photonic components) [5][6][7][8][9][10] to nanotechnology (micropatterning, nanopatterning). 11,12 In a typical experiment, two coherent laser beams, with a wavelength in the azo absorption band, are intersected to generate an interference sinusoidal patterning at the sample surface (usually a thin spin-coated film) at a temperature well below the T g of the polymer.…”

mentioning

confidence: 99%

Surface relief gratings inscription in linear and crosslinked azo modified epoxy‐isocyanate polymers

Sáiz

Ainchil

Zucchi

et al. 2015

J Polym Sci B Polym Phys

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This work analyses the SRG forming ability of a linear and a crosslinked polymer, both based on the same azo chromophore (Disperse Red 19, DR19) and diisocyanate (4,4'‐metilen‐bis(cyclohexyl isocyanate), DI) with similar glass transition temperature values. The effect of the experimental and geometrical parameters (such as beams polarization direction and interference pattern spacing) on the surface modulation process was examined as well. The absence of photodegradation or bleaching was corroborated by comparing Raman spectra inside and outside the SRG zone. Being a very important subject matter, the influence of crosslinking on the inscription rates and thermal stability of SRGs was investigated. Crosslinked films with an interesting modulation and good grating stability, even at high temperatures (160 °C), were obtained. Gratings shape was retained, and significant diffraction was still observed even well above the Tg of the bulk sample. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2015, 53, 587–594

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Holographic fabrication of polarization selective diffractive optical elements on azopolymer film

Cited by 19 publications

References 23 publications

Optically Induced Surface Relief Gratings in Polymer Films Doped With Sulphonyl Group Containing Azobenzene

Optically Induced Surface Relief Gratings in Polymer Films Doped With Sulphonyl Group Containing Azobenzene

Reversible patterning of poly(methylmethacrylate) doped with disperse Red 1 by laser scanning

Surface relief gratings inscription in linear and crosslinked azo modified epoxy‐isocyanate polymers

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