There are regular Photonics Calls for Proposals published by the European Commission. The Photonics21 community is the dedicated body to define the European call topics for photonics.
Open European Photonics Calls under the Horizon Europe Programme:
There are no open European photonics calls at the moment.
The photonics calls under Horizon Europe Work Programme 2025 will be published as soon as the European Commission publishes the Work Programme.
You can find all open Horizon Europe calls on the CORDIS website.
Open Calls by the European Innovation Council:
EIC Accelerator: It focuses on scientific discoveries or technological breakthroughs, which need significant funding over a longer timeframe before returns can be generated. Such innovations often struggle to attract financing because the risks and time involved are generally too high. This funding enables the innovators to attract the full investment amounts that are needed to scale up in a shorter timeframe.
EIC Pathfinder: Interdisciplinary teams of researchers can apply for research and innovation grants that will support them to realise their breakthrough ideas and have a transformative positive effect on our economy and society.