Design of a short-focal-length double-Fourier-transform-lens system for holographic storage

Zeng, Jiyong; Jin, Guofan; Wang, Minqiang; He, Qingsheng; Yao, Yan

doi:10.1117/1.2714541

Cited by 5 publications

(1 citation statement)

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“…5,6) Although, lens systems have been specially designed for demonstration platforms, it is not known what the practical minimum implementations are for the lens systems having small number of elements. [7][8][9] Researches have been done on Fourier transform lens systems which have the same 4-f configuration as HDSS objectives, but they are not directly adoptable for high density and high data transfer rate data storage applications due to their relatively low NA. [10][11][12][13][14][15][16][17][18][19][20] Another important aspect of HDSS, especially for consumer use, is an interchangeable medium.…”

Section: Introductionmentioning

confidence: 99%

Designs and Tolerances of Numerical Aperture 0.8 Objective Lenses for Page-Based Holographic Data Storage Systems

Takashima

Hesselink

2009

jjap

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A two-element aspheric objective lens having numerical aperture (NA) of 0.8 has been designed for media interchangeable holographic recordings. Lens design tolerance of offence against the sine condition and lens aberrations of object and reference beams have been formalized by coupled wave theory and related to diffraction efficiency of holograms. An optimum first-order power arrangement of objective lenses having two air-spaced elements has been identified by minimizing fifth-order aberrations and is further optimized ray-tracebased optimization code. Within tolerances criteria required for media-interchangeable systems, the design has demonstrated high NA of 0.8 with long working distance of 20% of the focal length.

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