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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 13 — Jul. 1, 2013
  • pp: 2370–2372

Laser cooling of beryllium ions using a frequency-doubled 626 nm diode laser

F. M. J. Cozijn, J. Biesheuvel, A. S. Flores, W. Ubachs, G. Blume, A. Wicht, K. Paschke, G. Erbert, and J. C. J. Koelemeij  »View Author Affiliations

Optics Letters, Vol. 38, Issue 13, pp. 2370-2372 (2013)

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We demonstrate laser cooling of trapped beryllium ions at 313 nm using a frequency-doubled extended cavity diode laser operated at 626 nm, obtained by cooling a ridge waveguide diode laser chip to 31°C. Up to 32 mW of narrowband 626 nm laser radiation is obtained. After passage through an optical isolator and beam shaping optics, 14 mW of 626 nm power remains of which 70% is coupled into an external enhancement cavity containing a nonlinear crystal for second-harmonic generation. We produce up to 35 μW of 313 nm radiation, which is subsequently used to laser cool and detect 6×102 beryllium ions, stored in a linear Paul trap, to a temperature of about 10 mK, as evidenced by the formation of Coulomb crystals. Our setup offers a simple and affordable alternative for Doppler cooling, optical pumping, and detection to presently used laser systems.

© 2013 Optical Society of America

OCIS Codes
(140.2020) Lasers and laser optics : Diode lasers
(140.3320) Lasers and laser optics : Laser cooling
(140.3610) Lasers and laser optics : Lasers, ultraviolet
(140.7300) Lasers and laser optics : Visible lasers
(300.6520) Spectroscopy : Spectroscopy, trapped ion
(270.5585) Quantum optics : Quantum information and processing

ToC Category:

Original Manuscript: April 22, 2013
Revised Manuscript: June 5, 2013
Manuscript Accepted: June 5, 2013
Published: June 28, 2013

Virtual Issues
July 19, 2013 Spotlight on Optics

F. M. J. Cozijn, J. Biesheuvel, A. S. Flores, W. Ubachs, G. Blume, A. Wicht, K. Paschke, G. Erbert, and J. C. J. Koelemeij, "Laser cooling of beryllium ions using a frequency-doubled 626 nm diode laser," Opt. Lett. 38, 2370-2372 (2013)

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