Abstract: The goal of this research is recording of volume holograms in thick photopolymer material, based on the use of forbidden singlet–triplet transitions of the dye-sensitizer with high intensity (up to 12 GW cm−2) nanosecond pulses at λ=532nm. The material has threshold character of recording, that can lead to improved three-dimensional (3D) control of photochemical or photophysical processes. This is especially important for the microholographic approach to 3D multilayer optical data storage. The concentrations of the dye-sensitizer and electron donor in the photopolymer was optimized, and high value of refractive index change of 3.1⋅10−3 was achieved. The sensitivity of the material under research is much higher than the sensitivity of materials using two-photon absorption, which made it possible to record microholograms by a single laser pulse. Using the method of heterodyne detection, we also studied the spatial distribution of the optical inhomogeneity in photopolymer material. © 2021 Elsevier B.V.

Cite: Steinberg I.S. , Vasilyev E.V. , Shelkovnikov V.V. , Kargapolova I.Y.
Use of forbidden singlet–triplet electron transitions in photopolymer material for holographic recording with high intensity nanosecond laser pulses
Optics Communications. 2022. V.505. 127540 . DOI: 10.1016/j.optcom.2021.127540 WOS Scopus OpenAlex

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Web of science:	WOS:000711568500003
Scopus:	2-s2.0-85117569046
OpenAlex:	W3203014978

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