scispace - formally typeset
A

Andreas Tünnermann

Researcher at Fraunhofer Society

Publications -  1757
Citations -  48543

Andreas Tünnermann is an academic researcher from Fraunhofer Society. The author has contributed to research in topics: Fiber laser & Laser. The author has an hindex of 97, co-authored 1738 publications receiving 43757 citations. Previous affiliations of Andreas Tünnermann include Schiller International University & University of Jena.

Papers
More filters
Proceedings ArticleDOI

Spherical artificial compound eye captures real images

Jacques Duparré, +2 more
TL;DR: The first spherical artificial compound eye capable of obtaining resolvable images is described in this article, which is based on a design that is slightly different from the natural archetype: it is comprised of an imaging microlens array and a pinhole array serving as receptors on separate spherical bulk lenses.
Patent

Monolithic, non-planar ring laser with Q-switched single-frequency operation

Ingo Freitag, +1 more
TL;DR: In this article, the authors proposed a monolithic, non-planar ring laser having Q-switched single-frequency operation, which is composed of a laser material having saturable losses at the lasing transition (lasing wavelength), and is fitted at least on one surface with a saturable absorber-material layer.
Journal ArticleDOI

An EUV beamsplitter based on conical grazing incidence diffraction.

Christoph Braig, +7 more
- 16 Jan 2012 - 
TL;DR: It is shown that periods of a few 10(2) nm may permit an exclusive (±1)(st) order diffraction with efficiencies up to ~ 35% in each of them, whereas higher evanescent orders vanish.
Journal ArticleDOI

Antireflective subwavelength structures on microlens arrays—comparison of various manufacturing techniques

Claudia Pacholski, +9 more
- 01 Jan 2012 - 
TL;DR: The optical performance of the resulting ARS on the MLAs is as good as ARS fabricated on planar substrates with increased transmission of up to 96% at certain wavelengths.
Journal ArticleDOI

Observation of surface solitons in chirped waveguide arrays.

Alexander Szameit, +8 more
- 15 May 2008 - 
TL;DR: In this article, surface solitons were observed in chirped semi-infinite waveguide arrays whose waveguides exhibit exponentially decreasing refractive indices, and it was shown that the power threshold for surface wave formation decreases with an increase of the array chirp and that linear surface modes are supported.