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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 36 — Dec. 20, 2009
  • pp: 6961–6966

Linewidths below 100 kHz with external cavity diode lasers

Sebastian D. Saliba and Robert E. Scholten  »View Author Affiliations


Applied Optics, Vol. 48, Issue 36, pp. 6961-6966 (2009)
http://dx.doi.org/10.1364/AO.48.006961


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Abstract

The linewidth of external cavity diode lasers (ECDLs) is an increasingly important characteristic for experiments in coherent optical communications and atomic physics. The Schawlow–Townes and time-averaged linewidths depend on free parameters of the design, such as cavity length, power, and grating characteristics. We show that the linewidth is also sensitive to the focus, set by the distance between the laser and the collimating lens, due to the effect on the external cavity backcoupling efficiency. By considering these factors, a simple ECDL can readily achieve linewidths below 100 kHz .

© 2009 Optical Society of America

OCIS Codes
(140.2020) Lasers and laser optics : Diode lasers
(140.3410) Lasers and laser optics : Laser resonators
(140.3600) Lasers and laser optics : Lasers, tunable

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: October 7, 2009
Manuscript Accepted: November 18, 2009
Published: December 11, 2009

Citation
Sebastian D. Saliba and Robert E. Scholten, "Linewidths below 100 kHz with external cavity diode lasers," Appl. Opt. 48, 6961-6966 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-36-6961

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