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Optics Letters

Optics Letters


  • Vol. 21, Iss. 19 — Oct. 1, 1996
  • pp: 1570–1572

Synchronization of environmentally coupled, passively mode-locked fiber lasers

G. Sucha, M. Hofer, M. E. Fermann, F. Haberl, and D. Harter  »View Author Affiliations

Optics Letters, Vol. 21, Issue 19, pp. 1570-1572 (1996)

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We have synchronized a pair of femtosecond, passively mode-locked Er-doped fiber lasers by active adjustment of the cavity length of one laser with an electronic servo. While each laser delivers pulses with durations of several hundred femtoseconds, they have been synchronized to within a relative timing jitter of 5 ps rms, as measured by cross correlation. This corresponds to a phase error of 30 arcsec. Low drift and jitter were accomplished by thermal and mechanical coupling of the two lasers.

© 1996 Optical Society of America

Original Manuscript: April 22, 1996
Published: October 1, 1996

G. Sucha, M. Hofer, M. E. Fermann, F. Haberl, and D. Harter, "Synchronization of environmentally coupled, passively mode-locked fiber lasers," Opt. Lett. 21, 1570-1572 (1996)

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  1. D. E. Spence, W. E. Sleat, J. M. Evans, W. Sibbett, J. D. Kapfka, Opt. Commun. 101, 286 (1993). [CrossRef]
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  7. This type of assembly could, in principle, be integrated into a pigtailed unit.
  8. This is probably an aliasing effect: The closed-loop feedback system (including the lasers) has a resonance near 31 Hz, which could cause real timing jitter at the same frequency. This would be undersampled by the 34-Hz sampling rate of the correlator, causing a spurious signal near 3 Hz.

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