Third-harmonic-generation of a diode laser for quantum control of beryllium ions

We generate coherent ultraviolet radiation at 313 nm as the third harmonic of an external-cavity diode laser. We use this radiation for laser cooling of trapped beryllium atomic ions and sympathetic cooling of co-trapped beryllium-hydride molecular ions. An LBO crystal in an enhancement cavity gener...

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Bibliographic Details
Published in:Optics express 2017-04, Vol.25 (7), p.7220-7229
Main Authors: Carollo, Ryan A, Lane, David A, Kleiner, Edward K, Kyaw, Phyo Aung, Teng, Chu C, Ou, Celia Y, Qiao, Shenglan, Hanneke, David
Format: Article
Language:English
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Summary:We generate coherent ultraviolet radiation at 313 nm as the third harmonic of an external-cavity diode laser. We use this radiation for laser cooling of trapped beryllium atomic ions and sympathetic cooling of co-trapped beryllium-hydride molecular ions. An LBO crystal in an enhancement cavity generates the second harmonic, and a BBO crystal in a doubly resonant enhancement cavity mixes this second harmonic with the fundamental to produce the third harmonic. Each enhancement cavity is preceded by a tapered amplifier to increase the fundamental light. The 36-mW output power of this all-semiconductor-gain system will enable quantum control of the beryllium ions' motion.
ISSN:1094-4087
1094-4087
DOI:10.1364/oe.25.007220