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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 27, Iss. 9 — May. 1, 2002
  • pp: 719–721

Ultralow noise and supermode suppression in an actively mode-locked external-cavity semiconductor diode ring laser

C. M. DePriest, T. Yilmaz, P. J. Delfyett, Jr., S. Etemad, A. Braun, and J. Abeles  »View Author Affiliations


Optics Letters, Vol. 27, Issue 9, pp. 719-721 (2002)
http://dx.doi.org/10.1364/OL.27.000719


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Abstract

We report what is to our knowledge the lowest phase and amplitude noise characteristics achieved to date in a 10-GHz pulse train produced by the active harmonic mode locking of an external-cavity semiconductor diode laser. Supermode noise has also been suppressed below -140 dBc/Hz by use of a high-finesse fiber Fabry–Perot etalon as an intracavity filter. Novel noise sideband measurements that extend to the Nyquist offset frequency suggest a significant advantage in using harmonic (rather than fundamental) mode locking to produce ultralow-noise pulse trains, owing to the relationship between the noise roll-off frequency and the fundamental cavity frequency.

© 2002 Optical Society of America

OCIS Codes
(250.5980) Optoelectronics : Semiconductor optical amplifiers
(320.7120) Ultrafast optics : Ultrafast phenomena

Citation
C. M. DePriest, T. Yilmaz, P. J. Delfyett, Jr., S. Etemad, A. Braun, and J. Abeles, "Ultralow noise and supermode suppression in an actively mode-locked external-cavity semiconductor diode ring laser," Opt. Lett. 27, 719-721 (2002)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-27-9-719

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