Thermal Fixing of Photoinduced Gratings

Carrascosa, M.; Arizméndi, L.; Cabrera, Jesús Hernández

doi:10.1007/0-387-25192-8_12

Cited by 2 publications

(3 citation statements)

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“…In this way, the electronic distribution is continuously compensated by ionic charges [9]. During this process the space charge electric field is relatively small due to the continuous charge compensation.…”

Section: B Controlled Simultaneous Recording/fixing Processmentioning

confidence: 99%

“…The interest comes mainly because high fixed diffraction efficiency can be obtained for relatively thin samples due to its bulk photovoltaic effect [8]. Moreover, thermal fixing of holograms in lithium niobate is nowadays a well-known technique to obtain long-living light-insensitive photorefractive holograms [9]. On the other hand, reproducibility of high-diffractionefficiency gratings is not well solved yet.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, reproducibility of high-diffractionefficiency gratings is not well solved yet. Thermal fixing [9] is a technique based on heating the sample to temperatures in the range of 120°C to 180°C for some minutes after (sequential) or during (simultaneous) hologram recording. At these temperatures, proton impurities are mobile enough to compensate the electronic charge distribution created by the light beam interference.…”

Section: Introductionmentioning

confidence: 99%

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High-efficiency holograms fixed in lithium niobate after recording using a digital fringe stabilization system

Arizméndi

Ambite

2012

Appl. Opt.

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We used a digital feedback control loop system to produce reproducible fixed volume transmission holograms of high diffraction efficiency. Different strategies were investigated to obtain holograms of good quality and the highest refractive index modulation depth. Using this control system, we were able to record holograms with stationary fringes. Additionally to using the stationary fringe recording, a double recording-fixing schedule resulted in being the most appropriate one to produce reproducible holograms of better characteristics. This strategy is discussed and compared with other already established ones.

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Section: B Controlled Simultaneous Recording/fixing Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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