The 2nd HortiQD Webinar delves into advanced technologies for NIR optical filters, focusing on Fabry-Perot configurations, MEMS actuators, and micro-nano patterning techniques. A concise journey through tunable solutions ranging from 0.8 to 4.5 µm, with expert insights on design principles, applications, and fabrication processes.

ABSTRACT

Narrow band optical filters are a key component for several sensing applications, such as (gas) absorption spectroscopy and hyper spectral imaging. TUC together with partners have a long history and experience in design and fabrication of such filters based on out-of-plane transmission and interference exploiting the Fabry-Perot configuration. By combining appropriate optical resonators with MEMS actuators, we are able to create tunable filters for various wavelength rages, from VIS and NIR to MIR. In the webinar we will focus on NIR (0.8….4.5 µm) and discuss possible optical resonator configurations, introduce our actuation and control concept and describe relevant fabrication technologies and results.

AGENDA

September 29th, 2025

14:00 – 14:05
Welcome and introduction
Opening remarks and introduction of the speakers.

14:05 – 14:35
Working principle and application of tunable optical filters
Speaker: Prof. Karla Hiller

14:35 – 15:05
Micro and Nano patterning for optical surfaces and photonics
Speaker: Dr. Christian Helke

15:05 – 15:35
Technologies and fabrication of optical filters
Speaker: Prof. Karla Hiller

15:35 – 15:55
Q&A session
Opportunity for participants to ask questions to the speakers and discuss.

15:55 – 16:00
Closing Remarks