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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 23 — Dec. 1, 2013
  • pp: 5087–5089

Injection locking of two frequency-doubled lasers with 3.2  GHz offset for driving Raman transitions with low photon scattering in Ca43+

N. M. Linke, C. J. Ballance, and D. M. Lucas  »View Author Affiliations

Optics Letters, Vol. 38, Issue 23, pp. 5087-5089 (2013)

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We describe the injection locking of two infrared (794 nm) laser diodes that are each part of a frequency-doubled laser system. An acousto-optic modulator in the injection path gives an offset of 1.6 GHz between the lasers for driving Raman transitions between states in the hyperfine split (by 3.2 GHz) ground level of Ca43+. The offset can be disabled for use in Ca40+. We measure the relative linewidth of the frequency-doubled beams to be 42 mHz in an optical heterodyne measurement. The use of both injection locking and frequency doubling combines spectral purity with high optical power. Our scheme is applicable for providing Raman beams across other ion species and neutral atoms where coherent optical manipulation is required.

© 2013 Optical Society of America

OCIS Codes
(020.0020) Atomic and molecular physics : Atomic and molecular physics
(020.4180) Atomic and molecular physics : Multiphoton processes
(140.3550) Lasers and laser optics : Lasers, Raman
(140.3515) Lasers and laser optics : Lasers, frequency doubled

ToC Category:
Lasers and Laser Optics

Original Manuscript: September 9, 2013
Revised Manuscript: October 21, 2013
Manuscript Accepted: October 22, 2013
Published: November 25, 2013

N. M. Linke, C. J. Ballance, and D. M. Lucas, "Injection locking of two frequency-doubled lasers with 3.2  GHz offset for driving Raman transitions with low photon scattering in Ca43+," Opt. Lett. 38, 5087-5089 (2013)

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