Diffractive beam splitter for laser Doppler velocimetry

Schmidt, Javier Alejandro; Völkel, R.; Stork, Wilhelm; Sheridan, John T.; Schwider, Johannes; Streibl, N.; Durst, F.

doi:10.1364/ol.17.001240

Cited by 30 publications

(16 citation statements)

References 7 publications

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“…29 They must be understood in order to determine material applicability in a wide range of areas such as holographic data storage, 30,31 photoembossing, 27 and diffractive optical element fabrication. [32][33][34] …”

Section: Discussionmentioning

confidence: 99%

Modeling the photochemical effects present during holographic grating formation in photopolymer materials

Gleeson

Kelly

Sabol

et al. 2007

Journal of Applied Physics

156

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The development of a theoretical model of the processes present during the formation of a holographic grating in photopolymer materials is crucial in enabling further development of holographic applications. To achieve this, it is necessary to understand the photochemical and photophysical processes involved and to isolate their effects, enabling each to be modeled accurately. While photopolymer materials are practical materials for use as holographic recording media, understanding the recording mechanisms will allow their limitations for certain processes to be overcome. In this paper we report generalizations of the nonlocal polymer driven diffusion ͑NPDD͒ model to include the effects of photosensitive dye absorption and the inhibition effects.

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Section: Discussionmentioning

confidence: 99%

Modeling the photochemical effects present during holographic grating formation in photopolymer materials

Gleeson

Kelly

Sabol

et al. 2007

Journal of Applied Physics

156

View full text Add to dashboard Cite

show abstract

“…In particular we note that our use of a step function to model the inhibition period must be reexamined. However, given the variety of material in which inhibition effects 23,34 and threshold effects 35 have been observed, even the incomplete results presented here are significant for a wide range of applications, including holographic data storage, [36][37][38] diffractive optical element fabrication, [39][40][41] and photoembossing. …”

Section: Discussionmentioning

confidence: 99%

Effects of absorption and inhibition during grating formation in photopolymer materials

et al. 2006

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“…2 It is necessary, however, to develop accurate models which describe the behavior of photopolymer. As noted, development of such models is critical for many applications including holographic data storage 3,4 and holographic optical element [5][6][7] fabrication and photoembossing. 8 Many such models have been proposed.…”

Section: Introductionmentioning

confidence: 99%

Temporal response and first order volume changes during grating formation in photopolymers

Kelly

Gleeson

et al. 2006

Journal of Applied Physics

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We examine the evolution of the refractive index modulation when recording gratings in an acrylamide based photopolymer. A nonlocal diffusion model is used to predict theoretically the grating evolution. The model has been developed to account for both nonlocal spatial and temporal effects in the medium, which can be attributed to polymer chain growth. Previously it was assumed that the temporal effect of chain growth could be neglected. However, temporal effects due to chain growth and monomer diffusion are shown to be significant, particularly over short recording periods where dark field amplification is observed. The diffusion model is solved using a finite-difference technique to predict the evolution of the monomer and polymer concentrations throughout grating recording. Using independently measured refractive index values for each component of the recording medium, the Lorentz-Lorenz relation is used to determine the corresponding refractive index modulation. The corresponding diffraction efficiency is then determined using rigorous coupled wave analysis. The diffraction efficiency curves are presented for gratings recorded using short exposure times, monitored in real time, both during and after recording. The effect of volume shrinkage of polymer on grating evolution is also examined. Both the nonlocal temporal response of the material and monomer diffusion are shown to influence refractive index modulation postexposure.

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Diffractive beam splitter for laser Doppler velocimetry

Abstract: Völkel, R.; Stork, W.; Sheridan, John T.; Schwider, J.; Streibl, N.; Durst, F. Publication date1992-09-01 Publication informationOptics Letters, 17 (17): 1240-1242 Publisher Optical Society of AmericaLink to online version http://dx

Cited by 30 publications

References 7 publications

Modeling the photochemical effects present during holographic grating formation in photopolymer materials

Modeling the photochemical effects present during holographic grating formation in photopolymer materials

Effects of absorption and inhibition during grating formation in photopolymer materials

Temporal response and first order volume changes during grating formation in photopolymers

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