Sub-50 fs Yb-doped laser with anomalous-dispersion photonic crystal fiber

Zuxing Zhang, Ç. Şenel, R. Hamid, F.Ö. Ilday

Research output: Contribution to journalArticlepeer-review


We report on the generation of 42 fs pulses at 1 µm in a completely fiber-integrated format, which are, to the best of our knowledge, the shortest from all-fiber-integrated Yb-doped fiber lasers to date. The ring fiber cavity incorporates anomalous-dispersion, solid-core photonic crystal fiber with low birefringence, which acts as a broadband, in-fiber Lyot filter to facilitate mode locking. The oscillator operates in the stretched-pulse regime under slight normal net cavity dispersion. The cavity generates 4.7 ps long pulses with a spectral bandwidth of 58.2 nm, which are dechirped to 42 fs via a grating pair compressor outside of the cavity. Relative intensity noise (RIN) of the laser is characterized, with the integrated RIN found to be 0.026% in the 3 Hz-250 kHz frequency range.
Original languageEnglish
Pages (from-to)956-958
Number of pages3
JournalOptics Letters
Issue number6
Publication statusPublished - 15 Mar 2013


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