Versatile, high-power 460 nm laser system for Rydberg excitation of ultracold potassium
We present a versatile laser system which provides more than 1.5 W of narrowband light, tunable in the range from 455-463 nm. It consists of a commercial titanium-sapphire laser which is frequency doubled using resonant cavity second harmonic generation and stabilized to an external reference cavity...
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| Main Authors: | , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
20 Jun 2017
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| In: |
Optics express
Year: 2017, Volume: 25, Issue: 13, Pages: 14829-14839 |
| ISSN: | 1094-4087 |
| DOI: | 10.1364/OE.25.014829 |
| Online Access: | Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1364/OE.25.014829 Verlag, kostenfrei, Volltext: https://www.osapublishing.org/abstract.cfm?uri=oe-25-13-14829 
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| Author Notes: | Alda Arias, Stephan Helmrich, Christoph Schweiger, Lynton Ardizzone, Graham Lochead, and Shannon Whitlock |
| Summary: | We present a versatile laser system which provides more than 1.5 W of narrowband light, tunable in the range from 455-463 nm. It consists of a commercial titanium-sapphire laser which is frequency doubled using resonant cavity second harmonic generation and stabilized to an external reference cavity. We demonstrate a wide wavelength tuning range combined with a narrow linewidth and low intensity noise. This laser system is ideally suited for atomic physics experiments such as two-photon excitation of Rydberg states of potassium atoms with principal quantum numbers n > 18. To demonstrate this we perform two-photon spectroscopy on ultracold potassium gases in which we observe an electromagnetically induced transparency resonance corresponding to the 35s1/2 state and verify the long-term stability of the laser system. Additionally, by performing spectroscopy in a magneto-optical trap we observe strong loss features corresponding to the excitation of s, p, d and higher-l states accessible due to a small electric field. |
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| Item Description: | Gesehen am 22.08.2017 |
| Physical Description: | Online Resource |
| ISSN: | 1094-4087 |
| DOI: | 10.1364/OE.25.014829 |