Monolithic Yb-fiber femtosecond laser with intracavity all-solid PBG fiber and ex-cavity HC-PCF

Dmitry Turchinovich, Xiaomin Liu, Jesper Lægsgaard

Research output: Contribution to journalConference articleResearchpeer-review


We demonstrate an all-fiber femtosecond master oscillator / power amplifier operating at the central wavelength of 1033 nm, based on Yb-doped fiber as gain medium, and two different kinds of photonic crystal fibers for dispersion control and stabilization. An all-solid (AS) polarization maintaining (PM) photonic bandgap fiber (PBG) is used in the cavity of the master oscillator for dispersion compensation and stabilization of modelocking. The final compression of an chirped-pulse-amplified laser signal is performed in a hollow PM PCF, yielding final fiber-delivered pulse energy of around 7 nJ, and pulse duration of around 297 fs. The self-stabilization mechanism of the oscillator, based on the optical nonlinearities in an AS PCF, results in excellent environmental and operational stability of our laser. Stable self-starting fundamental modelocking is maintained for at least 4 days of operation. During the 6-hour long observation of the output power, power fluctuations of less than 0.38 % are measured. Stable fundamental modelocking is maintained during temperature sweeps in the range 10 - 40 °C.
Original languageEnglish
JournalProceedings of SPIE, the International Society for Optical Engineering
Pages (from-to)75801X
Number of pages9
Publication statusPublished - 2010
EventFiber Lasers VII: Technology, Systems and Applications : Therapeutic Laser Applications and Laser-Tissue Interactions - San Francisco, CA, United States
Duration: 23 Jan 201028 Jan 2010
Conference number: 7


ConferenceFiber Lasers VII: Technology, Systems and Applications
CountryUnited States
CitySan Francisco, CA
OtherSPIE volume 7580

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