Axial beam shaping with nonspherical microoptics

被引：17

作者：

Grunwald, R

Woggon, S

Griebner, U

Ehlert, R

Reinecke, W

机构：

[1] Gesell Forderung Angew Opt Optoelekt Quantenelekt, D-12489 Berlin, Germany

[2] Max Born Inst Nichtlineare Opt & Kurzzeitspektros, D-12489 Berlin, Germany

[3] Ingn Bur Optikentwicklung, D-12489 Berlin, Germany

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1998年 / 37卷 / 6B期

关键词：

microlenses; micro-optics; nonspherical; micro-axicons; thin films; axial beam shaping;

D O I：

10.1143/JJAP.37.3701

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Thin film technologies have been used to fabricate special types of continuous-relief microoptical arrays with extremely nonspherical phase functions for axial beam shaping. Microlenses with Gaussian and double-parabolic profiles are found to generate extended or axially oscillating foci and have also been found to be much less sensitive to the axial position and tilt in comparison with parabolic lenses. The optical properties have been determined in improved experiments. The focusing behavior of the small bifocal microlenses with short focal distances has been investigated with a scanning near-field optical microscope (SNOM). The results of excimer laser drilling of holes in glass using microlenses with two axially separated focal zones are presented. Applications for mode-selection in micro-lasers and axial scanning and switching are proposed.

引用

页码：3701 / 3707

页数：7

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