Freiburg 2024 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 57: Poster VIII
Q 57.1: Poster
Donnerstag, 14. März 2024, 17:00–19:00, Aula Foyer
Implementation of a laser system for alkali vapor MEMS cell activation — •Janice Wollenberg1, Jenichi Clairvaux Felizco2, Julien Kluge1,2, Daniel Emanuel Kohl1,2, Kai Gehrke2, Andreas Thies2, Klaus Döringshoff1,2, Olaf Krüger2, and Markus Krutzik1,2 — 1Institut für Physik - Humboldt-Universität zu Berlin — 2Ferdinand - Braun-Institut, Leibniz - Institut für Höchstfrequenztechnik
We present a laser system designed for activating and characterizing Rubidium vapor MEMS cells. These mm-size cells are intended for use in chip-scale optical frequency references utilizing two-photon spectroscopy of Rubidium at 778 nm.
Our approach involves employing a high-power laser at 1064 nm to release elementary Rb from a dispenser pill within the MEMS cell. Within the dual-chambered MEMS cell, one chamber contains the Rb dispenser pill, which gets activated by the 1064 nm laser and releases Rb vapor into the second spectroscopy chamber via micro-channels. There, we use Doppler-free saturation spectroscopy of the D2 transition at 780 nm to characterize the quality of the cells. The outcomes of this work are expected to contribute to the development of optical frequency references, expanding their potential applications, e.g., in optical atomic clocks based on two-photon spectroscopy of Rubidium.
This work is supported by the German Space Agency (DLR) with funds provided by the Federal Ministry for Economic Affairs and Climate Action (BMWK) due to an enactment of the German Bundestag under grant numbers 50RK1971.