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Applied Optics

Applied Optics


  • Vol. 43, Iss. 19 — Jul. 1, 2004
  • pp: 3910–3914

Increasing the output of a Littman-type laser by use of an intracavity Faraday rotator

Rebecca Merrill, Rebecca Olson, Scott Bergeson, and Dallin S. Durfee  »View Author Affiliations

Applied Optics, Vol. 43, Issue 19, pp. 3910-3914 (2004)

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We present a method of external-cavity diode-laser grating stabilization that combines the high output power of the Littrow design with the fixed output pointing of the Littman-Metcalf design. Our new approach utilizes a Faraday-effect optical isolator inside the external cavity. Experimental testing and a model that describes the tuning range and optimal tuning parameters of the laser are described. Preliminary testing of this design has resulted in a short-term linewidth of 360 kHz and a side-mode suppression of 37 dB. The laser tunes mode hop free over 7 GHz, and we predict that much larger tuning ranges are possible.

© 2004 Optical Society of America

OCIS Codes
(140.2020) Lasers and laser optics : Diode lasers
(140.3410) Lasers and laser optics : Laser resonators
(140.3430) Lasers and laser optics : Laser theory
(140.3570) Lasers and laser optics : Lasers, single-mode
(140.3600) Lasers and laser optics : Lasers, tunable

Original Manuscript: August 21, 2003
Revised Manuscript: March 12, 2004
Published: July 1, 2004

Rebecca Merrill, Rebecca Olson, Scott Bergeson, and Dallin S. Durfee, "Increasing the output of a Littman-type laser by use of an intracavity Faraday rotator," Appl. Opt. 43, 3910-3914 (2004)

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