Photonics West 2019 from 5th -7th February 2019, San Francisco

Fraunhofer IOF zeigt neue Technologien für die Erdbeobachtung

Fraunhofer IOF / 28.1.2019

Photonics West in San Francisco is one of the world's leading international trade fairs for optical technologies and at the same time a global meeting place for science and industry. The Fraunhofer Institute for Applied Optics and Precision Engineering IOF from Jena is one of around 40 Thuringia-based exhibitors who will be presenting their concentrated optical know-how at the German Pavilion in the Moscone Center from February 5 to 7, 2019. One of the trends this year are optical technologies for earth observation.

© Fraunhofer IOF
Convex-curved lithographically produced lattice substrate for the DESIS mission.
© Fraunhofer IOF
PGP (prism grating prism) component for use in imaging spectrometers for earth observation.
© Fraunhofer IOF
Interlaced photon source for encrypted quantum communication.

Litographic patterning of non-planar surfaces

The integration of multiple optical functionalities into a single (ideally monolithic) hybrid element allows the downsizing of complex high-performance optical systems. As an example, Offner type imaging spectrometers make use of a reflective grating structure at a spherical shaped surface. An ultra-precision machined surface has been patterned by direct-writing optical lithography and a subsequent etching transfer using a reactive plasma process. It became part of the DESIS space mission.


Atomic Layer Deposition of Antireflection Coatings and Bandpass Filters

Conformal coatings are enabled by atomic layer deposition (ALD). This deposition method is based on cyclic, self-limiting reactions of precursors at the substrate surface. It allows precise thickness and composition control of thin films on arbitrarily shaped optics, which is a prerequisite for high optical performance. Interference multilayer optical coatings such as antireflection coatings and narrow bandpass filters on strongly curved optical lenses and dome components are presented.


Direct bonding of diffraction gratings and prisms

The demands on spectroscopic systems are immense. Experts at Fraunhofer IOF have developed a technology that even thick and rigid components, such as prisms, can be connected, so spectrometers can be built even more compact and robust in the future. The method is based on the formation of covalent oxygen bonds between different glass surfaces. This makes the PGP (prism-grating-prism) system suitable for other vacuum applications, for example precision optics or highly sensitive interferometers.

In addition, colleagues from the Fraunhofer IOF and the Institute for Applied Physics (FSU Jena) will give lectures and paper presentations on the subject of high-power fiber lasers. All interested visitors are cordially invited:

Sessions: Coherent Combination of Fiber Lasers

Room 205 (South Level Two)

3.5 kW coherently combined ultrafast fiber laser
Wednesday, 6 February 2019 - 10:30 to 11:00
Speaker: Michael Müller (Institute for Applied Physics Jena - Group Fiber Lasers)

Coherent beam combination of pulses emitted by a 16-core ytterbium-doped fiber
Wednesday, 6 February 2019 - 11:00 to 11:30
Speaker: Dr. Arno Klenke (Institute for Applied Physics Jena - Group Fiber Lasers)

For further information, the Jena experts will be available from February 5-7, 2019 at the Fraunhofer IOF booth at Photonics West (booth no. 4545-27, Moscone Center North Hall, German Pavilion).