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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 29, Iss. 4 — Feb. 15, 2004
  • pp: 403–405

Broadband phase-coherent optical frequency synthesis with actively linked Ti:sapphire and Cr:forsterite femtosecond lasers

Albrecht Bartels, Nathan R. Newbury, Isabell Thomann, Leo Hollberg, and Scott A. Diddams  »View Author Affiliations


Optics Letters, Vol. 29, Issue 4, pp. 403-405 (2004)
http://dx.doi.org/10.1364/OL.29.000403


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Abstract

We link the output spectra of a Ti:sapphire and a Cr:forsterite femtosecond laser phase coherently to form a continuous frequency comb with a wavelength coverage of 0.57–1.45 μm at power levels of 1 nW to 40μW per frequency mode. To achieve this, the laser repetition rates and the carrier-envelope offset frequencies are phase locked to each other. The coherence time between the individual components of the two combs is 40 μs . The timing jitter between the lasers is 20 fs. The combined frequency comb is self-referenced for access to its overall offset frequency. We report the first demonstration to our knowledge of an extremely broadband and continuous, high-powered and phase-coherent frequency comb from two femtosecond lasers with different gain media.

© 2004 Optical Society of America

OCIS Codes
(120.3940) Instrumentation, measurement, and metrology : Metrology
(190.2620) Nonlinear optics : Harmonic generation and mixing
(320.7090) Ultrafast optics : Ultrafast lasers
(320.7160) Ultrafast optics : Ultrafast technology

Citation
Albrecht Bartels, Nathan R. Newbury, Isabell Thomann, Leo Hollberg, and Scott A. Diddams, "Broadband phase-coherent optical frequency synthesis with actively linked Ti:sapphire and Cr:forsterite femtosecond lasers," Opt. Lett. 29, 403-405 (2004)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-29-4-403

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