Improvement of recording density by using a Wiener filter in multiplexed hologram recording

Yoshida, Shuhei; Saitoh, Motoaki; Ohuchi, Yasuhiro; Tanaka, Miyuki; Yamamoto, Masaaki

doi:10.1117/12.780477

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Recording Of Multiplexed Holograms1

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2016

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“…The testing of holograms was carried out by registration of spectral responses using a spectrometer. The diffraction efficiency of each hologram was estimated according to the transmission spectra by the method described in [27]. The spectral responses of the seven multiplexed reflection holograms are shown in figure 9.…”

Section: Recording Of Multiplexed Hologramsmentioning

confidence: 99%

Photopolymer material sensitized by xanthene dyes for holographic recording using forbidden singlet–triplet electronic transitions

Шелковников¹,

Vasiljev²,

Russkih³

et al. 2016

J. Opt.

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A new holographic photopolymer material is developed. The photopolymer material is sensitized by dyes of xanthene and thioxanthene series which contain iodine and bromine heavy atoms. Holographic recording was carried out during excitation of forbidden singlet–triplet electron transitions of dyes. Thioerythrosin triethylammonium was identified as the most effective sensitizer among a number of tested dyes. The spectral absorption area of the singlet–triplet electronic transition of the dye is conveyed in the red spectral range from 600 to 700 nm. The sensitivity of the photopolymer material to radiation with 633 nm wavelength is 180 mJ cm−2. Optimization of concentration of the main components of the photopolymer compositions was carried out in order to achieve maximum efficiency of holographic recording.

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Section: Recording Of Multiplexed Hologramsmentioning

confidence: 99%