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arXiv · 2011.02748

Simple and compact diode laser system stabilized to Doppler-broadened iodine-lines at 633 nm

Florian Krause·Erik Benkler·Christian Nölleke·Patrick Leisching·Uwe Sterr
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Abstract

We present a compact iodine-stabilized laser system at 633 nm, based on a distributed-feedback laser diode. Within a footprint of $27\times 15$ cm$^2$ the system provides 5 mW of frequency stabilized light from a single-mode fiber. Its performance was evaluated in comparison to Cs clocks representing primary frequency standards, realizing the SI unit Hz via an optical frequency comb. With the best suited absorption line the laser reaches a fractional frequency instability below $10^{-10}$ for averaging times above 10 s. The performance was investigated at several iodine lines and a model was developed to describe the observed stability on the different lines.

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Florian Krause, Erik Benkler, Christian Nölleke, Patrick Leisching, Uwe Sterr. 2020-11-05. Simple and compact diode laser system stabilized to Doppler-broadened iodine-lines at 633 nm. https://doi.org/10.1364/ao.409308

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