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Applied Optics

Applied Optics


  • Vol. 38, Iss. 3 — Jan. 20, 1999
  • pp: 548–553

Synchronous tuning of extended cavity diode lasers: the case for an optimum pivot point

Lars Nilse, Hillary J. Davies, and Charles S. Adams  »View Author Affiliations

Applied Optics, Vol. 38, Issue 3, pp. 548-553 (1999)

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Diode lasers can be tuned by simultaneous rotation and translation of an external grating. This can be achieved by rotating the grating about a displaced pivot point. We derive the tuning range as a function of pivot point position for various extended cavity geometries. In each case, the geometric problem reduces to the solution of a quadratic equation. For near-infrared wavelengths, placement of the pivot is relatively noncritical for tuning ranges of the order of 10 GHz, but requires millimeter accuracy for a tuning range >100 GHz.

© 1999 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(140.2020) Lasers and laser optics : Diode lasers
(140.3410) Lasers and laser optics : Laser resonators
(140.3600) Lasers and laser optics : Lasers, tunable

Original Manuscript: June 5, 1998
Revised Manuscript: October 19, 1998
Published: January 20, 1999

Lars Nilse, Hillary J. Davies, and Charles S. Adams, "Synchronous tuning of extended cavity diode lasers: the case for an optimum pivot point," Appl. Opt. 38, 548-553 (1999)

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