Efficient diffractive collimator for edge-emitting laser diodes

Kowalik, Artur; Góra, K.; Adamkiewicz, Grażyna; Ziętek, Monika; Mikuła, Grzegorz; Kołodziejczyk, Andrzej; Jaroszewicz, Zbigniew

doi:10.1117/12.665301

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Comparison With the Paraxial Elliptical Zone Plate-experimen...1

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2012

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“…Next, the elliptical zone plates were manufactured with the help of e-beam lithography according to the technology described in detail in [33,34]. They were fabricated as binary phase elements by means of the electron-beam device ZBA 20 (Jenoptic GmbH) on the resist layer and then transferred into the substrate by a standard etching procedure.…”

Section: Comparison With the Paraxial Elliptical Zone Plate-experimen...mentioning

confidence: 99%

Nonparaxial anamorphic diffractive lenses

Sobczyk

Jaroszewicz

Kołodziejczyk

et al. 2012

J. Opt.

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Applications of anamorphic diffractive lenses, or in other words elliptical zone plates, are growing in number and diversity. Following this progress, the manufacturing methods of anamorphic diffractive lenses are also a subject of continuous improvement. On the other hand, their design is still based mainly on the paraxial approximation. In the present paper nonparaxial elliptical zone plates are presented and their difference from the paraxial version, termed as the elliptical aberration is shown. A comparison of their focusing quality was performed based on results of numerical modelling as well as experiments.

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Section: Comparison With the Paraxial Elliptical Zone Plate-experimen...mentioning

confidence: 99%