Evaluation of Multiplexing in High‐Density Holographic Memories

González-Leal, J.M.; Krečmer, P.; Prokop, J.; Elliott, S. R.

doi:10.1002/9783527602544.ch20

Cited by 10 publications

(6 citation statements)

References 19 publications

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“…If the big lasers in Fig. 6 were replaced by semiconductor lasers, the system would be basically the same as the one constructed by Elliott and coworkers as Holometer 73. We are also impressed with the ultimate resolution, ∼1 nm (Fig.…”

Section: Seventies: Birth With Excitementmentioning

confidence: 99%

Chalcogenide glasses in Japan: A review on photoinduced phenomena

Tanaka

Shimakawa

2009

Physica Status Solidi (b)

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Section: Seventies: Birth With Excitementmentioning

confidence: 99%

Chalcogenide glasses in Japan: A review on photoinduced phenomena

Tanaka

Shimakawa

2009

Physica Status Solidi (b)

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“…For instance, Bragg reflectors are inscribed in Ge-doped SiO2 fibers using excimer lasers [3], holographic images are stored in sulfide films [4], and optical phase-changes in telluride films have now been commercialized [5]. Nevertheless, fundamental mechanisms and unified understanding of these phenomena remain to be arduous problems in solid state science.…”

Section: Introductionmentioning

confidence: 99%

Photo-induced phenomena in GeO2 glass

Terakado

Tanaka

2006

Journal of Non-Crystalline Solids

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Photo-induced changes in GeO2 glass have been studied in optical and structural properties. Band-gap excitation gives rise to modifications in mid-gap optical absorption and photo-luminescence spectrum. It also produces electron-spin signals at g ≃ 1.995 and 2.008.Raman-scattering spectrum becomes sharper, x-ray diffraction patterns show disappearance of a crystalline peak, and illuminated surfaces expand. These observations can be accounted for by assuming bond transformations from rutile-like to defective quartz-like structures and/or from small to large rings. These photo-induced changes in GeO2 are comparatively discussed with those in SiO2 and GeS2.

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“…Photosensitive chalcogenide films have found a variety of applications in information storage, photonics, acoustooptic, opto-mechanical transducers, high-resolution display devices, optical writing, photolithography, light trimming band-pass filters, etc. [16][17][18][19].…”

mentioning

confidence: 99%

Laser‐induced optical properties change in Sb₁₀S₄₀Se₅₀ chalcogenide thin films: An investigation through FTIR and XPS measurements

Naik

Jena

Ganesan

et al. 2013

Physica Status Solidi (b)

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Chalcogenide glasses are interesting materials for their infrared transmitting properties and photo-induced effects. This paper reports the influence of light on the optical properties of Sb 10 S 40 Se 50 thin films. The amorphous nature and chemical composition of the deposited film was studied by X-ray diffraction and energy dispersive X-ray analysis (EDAX). The optical constants, i.e., refractive index, extinction coefficient, and optical band gap as well as film thickness are determined from the measured transmission spectra using the Swanepoel method. The dispersion of the refractive index is discussed in terms of the single-oscillator Wemple-DiDomenico model. The dispersion energy parameter was found to be less for the laser-irradiated film, which indicates the laser-irradiated film is more microstructurally disordered as compared to the as-prepared film. It is observed that laser-irradiation of the films leads to decrease in optical band gap (photo-darkening) while increase in refractive index. The decrease in the optical band gap is explained on the basis of change in nature of films due to chemical disorderness and the increase in refractive index may be due to the densification of films with improved grain structure because of microstructural disorderness in the films. The optical changes are supported by X-ray photoelectron spectroscopy data.

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Evaluation of Multiplexing in High‐Density Holographic Memories

Cited by 10 publications

References 19 publications

Chalcogenide glasses in Japan: A review on photoinduced phenomena

Chalcogenide glasses in Japan: A review on photoinduced phenomena

Photo-induced phenomena in GeO2 glass

Laser‐induced optical properties change in Sb₁₀S₄₀Se₅₀ chalcogenide thin films: An investigation through FTIR and XPS measurements

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Evaluation of Multiplexing in High‐Density Holographic Memories

Cited by 10 publications

References 19 publications

Chalcogenide glasses in Japan: A review on photoinduced phenomena

Chalcogenide glasses in Japan: A review on photoinduced phenomena

Photo-induced phenomena in GeO2 glass

Laser‐induced optical properties change in Sb10S40Se50 chalcogenide thin films: An investigation through FTIR and XPS measurements

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Laser‐induced optical properties change in Sb₁₀S₄₀Se₅₀ chalcogenide thin films: An investigation through FTIR and XPS measurements