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Opt Lett. 2009 May 1;34(9):1432-4.

High-energy laser pulse with a submegahertz repetition rate from a passively mode-locked fiber laser.

Author information

  • 1Network Technology Research Centre, School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553. tian0011@ntu.edu.sg

Abstract

We demonstrate an ultralong cavity, all-fiber, all-normal-dispersion Yb-doped fiber laser that is passively mode locked by a semiconductor saturable absorber mirror (SESAM). Without any discrete dispersion-compensation components or conventional spectral filters, the SESAM works together with the strongly chirped pulse and the nonlinearity induced spectrum broadening to perform a filtering-equivalent function, thus stabilizing the mode locking. The laser generates 4.3 nJ stable mode-locked pulses with a 397 kHz fundamental repetition rate at a 1068 nm central wavelength.

PMID:
19412296
[PubMed - indexed for MEDLINE]
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