Hannover 2016 – scientific programme
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MO: Fachverband Molekülphysik
MO 19: Posters 4: Novelties in Molecular Physics: Femtosecond Spectroscopy, Molecular Clusters, Cold Molecules and Helium Droplets
MO 19.22: Poster
Thursday, March 3, 2016, 16:30–19:00, Empore Lichthof
Towards Highly Sensitive Detection of Cold Formaldehyde via Laser-Induced Fluorescence — •Erich Dobler, Martin Ibrügger, Alexander Prehn, Rosa Glöckner, Sotir Chervenkov, Martin Zeppenfeld, and Gerhard Rempe — Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching, Germany
Due to their rich internal structure and the long-range dipole-dipole interaction, cold polar molecules offer many exciting applications ranging from many-body physics to quantum information science. For such experiments, a highly sensitive detection technique to observe even smallest numbers of molecules is essential.
For this purpose, we implement a detection scheme based on laser-induced fluorescence (LIF) for formaldehyde (H2CO), the molecule currently under investigation in our optoelectrical cooling experiment [1,2]. Successful detection of H2CO via LIF has already been shown [3] and, moreover, this technique also allows state-selective measurements. We present the setup and the results from absorption and LIF spectroscopy from the X1A1 electronic ground state to the 41 vibrational manifold of the Ã1A2 exited state of formaldehyde. Those measurements are performed as a first step towards the realization of a LIF-based detection of ultracold molecules.
[1] M. Zeppenfeld et. al., Phys. Rev. A 80, 041401 (2009).
[2] M. Zeppenfeld et al., Nature 491, 570-573 (2012).
[3] E. R. Hudson et al., Phys. Rev. A 73, 063404 (2006).