Dresden 2011 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

Q: Fachverband Quantenoptik und Photonik

Q 57: Poster 3: Quantengase, Ultrakalte Atome, Ultrakalte Moleküle, Materiewellen Optik, Präzisionsmessungen, Metrologie

Q 57.81: Poster

Donnerstag, 17. März 2011, 16:30–19:30, P1

Compact electronics for laser system in microgravity — •Thijs Wendrich, Wolfgang Ertmer, and Ernst Maria Rasel — Leibniz Universität Hannover, Institut für Quantenoptik

Microgravity experiments with ultra cold degenerate quantum gases require very compact and robust apparatuses that contain everything for the experiment like vacuum, lasers, optics, and the electronics. The LASUS project develops diode lasers, optical modules and electronics for such experiments, and specifically for the QUANTUS microgravity experiments. The focus of this contribution is on how to make all of the electronics to control the entire laser system for capturing and manipulating rubidium and potassium together with the electronics for the optical switching and frequency shifting, fit in a volume of a few liters. This will be achieved by a computer controlled modular setup using custom build high density circuit boards with mainly SMD components and by having all settings remote controlled via the onboard computer. Another key component in the miniaturization is the FPGA-based frequency controller which integrates several conventional PID controllers and modulation and demodulation devices for several laser systems in a single compact device. The LASUS project is a collaboration of FBH Berlin, HU Berlin, U Hamburg and LU Hannover supported by the German Space Agency DLR with funds provided by the Federal Ministry of Economics and Technology (BMWi) under grant number 50WM0939.