NDLI: An auto-locked diode laser system for precision metrology

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An auto-locked diode laser system for precision metrology

Content Provider	Semantic Scholar
Author	Beica, H. C. Carew, A. Vorozcovs, Andrejs Dowling, Philipp Pouliot, Alexander Singh, Gaganpreet Kumarakrishnan, Anantharaman
Copyright Year	2017
Abstract	We describe a diode laser system for precision metrology that relies on adaptations of a well-known design based on optical feedback from an interference filter. The laser head operates with an interchangeable base-plate, which allows for single-mode performance at distinct wavelengths of 633 nm and 780 nm. Frequency drifts are effectively suppressed by using a vacuum-sealed laser head, thereby allowing the laser frequency to be stabilized on time-scales of several hours. Using a digital auto-lock controller, we show that the laser frequency can be stabilized with respect to selected iodine and rubidium spectral lines. The controller can be programmed to use a pattern-matching algorithm or generate first- and third-derivative error signals for peak locking. Beat note characterization has demonstrated a short-term linewidth of ~2 MHz and an Allan deviation of 3.5 × 10-9 for a measurement time τ = 500 s. The laser characteristics have also enabled high-precision gravity measurements with accuracies of a few parts-per-billion (ppb).
File Format	PDF HTM / HTML
DOI	10.1117/12.2250653
Volume Number	10086
Alternate Webpage(s)	http://datamac.phys.yorku.ca/papers/HB-Defense%20paper.pdf
Alternate Webpage(s)	http://datamac.phys.yorku.ca/papers/hermina_LASE_paper_2017.pdf
Alternate Webpage(s)	https://doi.org/10.1117/12.2250653
Journal	LASE
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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