Physics – Optics
Scientific paper
Jun 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.554..611s&link_type=abstract
In: Proceedings of the 5th International Conference on Space Optics (ICSO 2004), 30 March - 2 April 2004, Toulouse, France. Ed.:
Physics
Optics
1
Generic Technology, Space Optics
Scientific paper
Future space mission rely on the availability of space qualified high precision optical metrology instruments like ultra stable laser sources. Here, we presnt a compact, frequency-doubled, monolithic Nd:YAG laser (non planar ring-oscillator, NPRO), frequency stabilized to a hyperfine transition in molecular iodine, based on the method of modulation transfer spectroscopy. Using a 10 cm long iodine cell cooled to 1°C and a total light power of ~5mW a frequency stability of 1×10-12 for an integration time of &tau=1 s and 3×10-13 for τ>100 s was achieved. By use of an active offset compensation (offset compensation by amplitude modulated sidebands, OCAMS), the frequency stability of this setup was furthermore improved to 4×10-14 for τ>5000 s. This setup therefore fulfills the basic metrological requirements of the LISA and Darwin missions (with potential beyond). Due to very compact construction, it serves as a study and demonstrator for a future space qualified iodine standard.
Braxmaier Claus
Huber Günter
Johann Ulrich
Müller Holger
Peters Achim
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