NDLI: Compact mode-locked diode laser system for high precision frequency comparisons in microgravity

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Compact mode-locked diode laser system for high precision frequency comparisons in microgravity

Content Provider	Semantic Scholar
Author	Christopher, Heike Kovalchuk, Evgeny V. Wicht, Andreas Erbert, Götz Tränkle, Günther Peters, Achim
Copyright Year	2017
Abstract	Nowadays cold atom-based quantum sensors such as atom interferometers start leaving optical labs to put e.g. fundamental physics under test in space. One of such intriguing applications is the test of the Weak Equivalence Principle, the Universality of Free Fall (UFF), using different quantum objects such as rubidium (Rb) and potassium (K) ultra-cold quantum gases. The corresponding atom interferometers are implemented with light pulses from narrow linewidth lasers emitting near 767 nm (K) and 780 nm (Rb). To determine any relative acceleration of the K and Rb quantum ensembles during free fall, the frequency difference between the K and Rb lasers has to be measured very accurately by means of an optical frequency comb. Micro-gravity applications not only require good electro-optical characteristics but are also stringent in their demand for compactness, robustness and efficiency. For frequency comparison experiments the rather complex fiber laser-based frequency comb system may be replaced by one semiconductor laser chip and some passive components. Here we present an important step towards this direction, i.e. we report on the development of a compact mode-locked diode laser system designed to generate a highly stable frequency comb in the wavelength range of 780 nm.
File Format	PDF HTM / HTML
DOI	10.1117/12.2304184
Volume Number	10563
Alternate Webpage(s)	https://www.spiedigitallibrary.org/proceedings/Download?DOI=10.1117/12.2304184&downloadType=proceedings+article&fullDOI=10.1117/12.2304184&isResultClick=True
Alternate Webpage(s)	https://doi.org/10.1117/12.2304184
Journal	International Conference on Space Optics
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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