The goal of this workshop is to review the state of semi-analitical and Finesse simulations of laser noise coupling in the ET interferometers. Furthermore, the laser stabilization concept of the input optics subsystem will be reviewed to derive the laser noise requirements at the interface of the pre-stabilized laser system and the input-optics subsystem. Everyone interested and/or knowledgeable in ET-Finesse simulations and input-optics layout and control concepts is invited to join the workshop. We plan to start with short introductory presentations and than continue in workshop style to make progress towards the ET laser-noise requirements. We will end with the planing of future work.
Agenda:
9h - 10:30h Laser noise coupling in ET interferometers
* Introduction - Benno Willke (15 min)
* Semi-analytical simulations of laser noise requirements at interferometer input - Debanjan Adhikari (45 min)
* Finesse simulations of laser noise requirements at interferometer input - Teng Zhang (30 min)
break
11h - 12:30h Laser noise reduction concepts
* Global frequency stabilization concept for ET - NN (30 min)
* Simulation of frequency stabilization system and consequences for requirements at PSL-IO interface - Teng Zhang (30min)
* Discussion - all (30min)
lunch break
13:30h - 15h Detailed review of existing simulation codes
break
15:30h - 17h Discussion
- How to get realistic Finesse3 laser noise coupling simulation based on current IFO parameters?
- How to deal with complex higher-order-mode couplings? Beam jitter coupling? Polarization fluctuation couplings? …
- How to derive official requirements at interferometer input and PSL-IO interface?
- …
