Second order grating formation in dry holographic photopolymers

Zhao, Guoheng; Mouroulis, Pantazis

doi:10.1016/0030-4018(95)00051-9

Cited by 38 publications

(21 citation statements)

References 19 publications

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“…This model and almost the great majority of the others, predict the existence of higher harmonics in the refractive index recorded on the material. However, with exception of the approximate analysis of Zhao et al [12], there is no quantitative information regarding diffraction by these higher harmonics.…”

Section: Introductionmentioning

confidence: 98%

Angular responses of the first and second diffracted orders in transmission diffraction grating recorded on photopolymer material

Neipp¹,

Gallego²,

Ortuño³

et al. 2003

Opt. Express

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Some of the theoretical models in the literature describing the mechanism of hologram formation in photopolymer materials predict the existence of higher harmonics in the Fourier expansion of the recorded refractive index. Nevertheless, quantitative information is only obtained for the first harmonic of the refractive index using Kogelnik's Coupled Wave Theory. In this work we apply the Rigorous Coupled Wave Theory to demonstrate that when recording phase diffraction gratings in PVA/acrylamide photopolymer materials, a second order grating is also recorded in the hologram even when the material is exposed to a sinusoidal interference pattern. The influence of this second order grating on the efficiency of the first order for replay at the first on-Bragg angular replay condition is studied and the size of the 2 nd harmonic examined.

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Section: Introductionmentioning

confidence: 98%

Angular responses of the first and second diffracted orders in transmission diffraction grating recorded on photopolymer material

Neipp¹,

Gallego²,

Ortuño³

et al. 2003

Opt. Express

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“…The simplicity of the first models [18,19], was completed by more accurate ideas demonstrating the influence of the many parameters involved in the image formation in this type of materials, and as a consequence the various models have become more and more complex [20,21]. For example there are many models taking a deep insight into the chemical kinetic reactions during exposure [21][22][23][24][25] or in the size of the polymer chains in order to predict the maximum spatial frequency that can be recorded.…”

Section: Introductionmentioning

confidence: 99%

Linearity in the response of photopolymers as optical recording media

et al. 2013

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Photopolymer are appealing materials for diffractive elements recording. Two of their properties when they are illuminated are useful for this goal: the relief surface changes and the refractive index modifications. To this goal the linearity in the material response is crucial to design the optimum irradiance for each element. In this paper we measured directly some parameters to know how linear is the material response, in terms of the refractive index modulation versus exposure, then we can predict the refractive index distributions during recording. We have analyzed at different recording intensities the evolution of monomer diffusion during recording for photopolymers based on PVA/Acrylamide. This model has been successfully applied to PVA/Acrylamide photopolymers to predict the transmitted diffracted orders and the agreement with experimental values has been increased. M. Elvin, "A highly elastic and adhesive gelatin tissue sealant for gastrointestinal surgery and colon anastomosis,"

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“…The extension of the approximate approach to include higher (second) orders (diffraction and modulation) can be done following, for example, literature in Ref. [21] or [22]. Unfortunately, both these works address only the diffraction under the Bragg condition and do not include effects of detuning from this condition.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

“…If it is used in its basic form, only the zeroth and the first diffraction orders can be analyzed and the AS map does not describes effects of higher diffraction and refractive index modulation orders. For obtaining information about the higher orders, the extended Kogelnik's coupled wave theory [21,22] or a more rigorous approach such as a Rigorous Coupled Wave Analysis (RCWA) [23,24], which calculates the AS maps numerically, can be used. The advantage of the Kogelnik's approach is a better physical insight into the problem, but the cost is less rigorous description of the diffraction problem and loss of some effects (e.g.…”

Section: Introductionmentioning

confidence: 99%

Complex method for angular-spectral analysis of volume phase diffraction gratings recorded in photopolymers

Vojtíšek

Květoň

Richter

2016

J. Eur. Opt. Soc.-Rapid Publ.

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Photopolymer recording materials are nowadays widely used for recording of diffraction gratings and other diffraction elements. For obtaining the best performance of these diffraction gratings for desired applications, it is important to assess these gratings from many different perspectives. In this contribution, we present an experimental and characterization approach to an analysis of diffraction gratings recorded into photopolymer materials. This approach is able to provide a complex and very illustrative description of these gratings response and, with accordance to the theory, information about some important grating parameters, such as a spatial period, slant angle, etc., as well. This approach is based on the measurement of a grating response for a wide range of angles and wavelengths and then on the construction and subsequent analysis of maps in the angular-spectral plane. It is shown that the measurements are in a good agreement with the theoretical predictions based on either approximate (Kogelnik's coupled wave theory) or rigorous (RCWA) techniques and that this approach provides complex and detailed characterization of the grating response which can be used for additional optimization or decision of applicability of measured sample gratings.

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Second order grating formation in dry holographic photopolymers

Cited by 38 publications

References 19 publications

Angular responses of the first and second diffracted orders in transmission diffraction grating recorded on photopolymer material

Angular responses of the first and second diffracted orders in transmission diffraction grating recorded on photopolymer material

Linearity in the response of photopolymers as optical recording media

Complex method for angular-spectral analysis of volume phase diffraction gratings recorded in photopolymers

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