This review presents a reflection-type holographic memory using three-dimensional(3D)speckle-shift multiplexing. First, the schematic of the proposed memory system was described. Then,experimental demonstrations of mu...This review presents a reflection-type holographic memory using three-dimensional(3D)speckle-shift multiplexing. First, the schematic of the proposed memory system was described. Then,experimental demonstrations of multiplexing in plane and along the depth direction were presented. The estimated storage capacity of single layer recording was introduced and the maximum storage capacity was discussed. To increase the storage capacity, the multi-layered recording was described. In the multilayered recording, the storage capacity can be increased by appropriate arrangement of holograms in each layer.展开更多
In the last few decades,there have been several advances in ultrafast imaging of light propagation with light-in-flight recording by holography(LIF holography),which can capture light propagation as a motion picture w...In the last few decades,there have been several advances in ultrafast imaging of light propagation with light-in-flight recording by holography(LIF holography),which can capture light propagation as a motion picture with a single shot in principle.Here,we review the recent advances in LIF holography by considering the perspectives of various development of functional imaging techniques and evaluation of LIF holography with numerical simulation methods.The methods for recording multiple motion pictures such as a space-division multiplexing,a pixel-by-pixel-based space-division multiplexing,and an angular multiplexing technique are added extend the capability of LIF holography.The numerical simulation models used for investigating the image characteristics of LIF hologram are discussed.Finally,a summary and conclusion of recent advances in LIF holography is presented.展开更多
文摘This review presents a reflection-type holographic memory using three-dimensional(3D)speckle-shift multiplexing. First, the schematic of the proposed memory system was described. Then,experimental demonstrations of multiplexing in plane and along the depth direction were presented. The estimated storage capacity of single layer recording was introduced and the maximum storage capacity was discussed. To increase the storage capacity, the multi-layered recording was described. In the multilayered recording, the storage capacity can be increased by appropriate arrangement of holograms in each layer.
基金Japan Society for the Promotion of Science(JSPS),KAKENHI Grantin-Aid for Scientific Research(A)(17H01062)KAKENHIGrantin-Aid for Transformative Research Areas(A)(20H05887 and 20H05886)KAKENHI Grant-in-Aid for JSPS Research Fellows(20J23542).
文摘In the last few decades,there have been several advances in ultrafast imaging of light propagation with light-in-flight recording by holography(LIF holography),which can capture light propagation as a motion picture with a single shot in principle.Here,we review the recent advances in LIF holography by considering the perspectives of various development of functional imaging techniques and evaluation of LIF holography with numerical simulation methods.The methods for recording multiple motion pictures such as a space-division multiplexing,a pixel-by-pixel-based space-division multiplexing,and an angular multiplexing technique are added extend the capability of LIF holography.The numerical simulation models used for investigating the image characteristics of LIF hologram are discussed.Finally,a summary and conclusion of recent advances in LIF holography is presented.
