Multi-wavelength optical pickup with diffractive optical elements

被引：4
|
作者：
Pawlowski, E
Dobschal, HJ
Falkenstörfer, O
Fürst, W
Steiner, R
Steingrüber, R
机构：
[1] Heinrich Hertz Inst Nachrichtentech Berlin GmbH, D-10587 Berlin, Germany
[2] Carl Zeiss Jena GmbH, Res & Technol Ctr, D-7740 Jena, Germany
来源：
JOURNAL OF MODERN OPTICS | 2000年 / 47卷 / 13期
关键词：
D O I：
10.1080/095003400428195
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A novel, to our knowledge, multi-wavelength diffractive optical pickup is presented. The pickup enables multi-focus imaging and increases the data transfer rate considerably. Parallel reading of two or more memory layers is possible. The different spots can be controlled independently. The optical pickup consists of different diffractive optical elements (DOEs). The measured full-width at half-maximum (FWHM) spot intensity for the DOE-pickup is 0.76 mu m-close to the diffraction limited predicted value of 0.71 mu m-indicating good optical performance. The measured highest diffraction efficiencies of the realized DOEs are about 92%.
引用
收藏
页码：2437 / 2453
页数：17
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