Zhang, Z.Şenel, Ç.Hamid, R.Ilday, F. Ö.2016-02-082016-02-0820130146-9592http://hdl.handle.net/11693/21034We 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.EnglishFiber cavityFrequency rangesGrating pair compressorLow birefringenceLyot filtersRelative intensity noiseSpectral bandwidthYb-doped fiber lasersFiber lasersFibersPhotonic crystal fibersYtterbiumPulse generatorsArticle10.1364/OL.38.000956