Browsing by Subject "Lyot filters"
Now showing 1 - 3 of 3
- Results Per Page
- Sort Options
Item Open Access All-fiber all-normal dispersion laser with a fiber-based Lyot filter(Optical Society of America, 2010-04-15) Özgören, K.; Ilday, F. Ö.We propose the use of a short section of polarization-maintaining fiber as a birefringent medium to construct an all-fiber Lyot filter inside the cavity of a fiber laser. This allows mode-locked operation of an all-fiber all-normal dispersion Yb-fiber oscillator without the use of a bulk bandpass filter and using standard components. Moreover, filter bandwidth and modulation depth is easily controlled by changing the length and splice angle of the polarization-maintaining-fiber section, leading to an adjustable filter. At mode-locked operation, the 30% output fiber port delivers 1nJ pulses that are dechirped to 230 fs duration.Item Open Access All-fiber all-normal dispersion laser with an in-fiber Lyot filter(Optical Society of America, 2010) Özgören, Kıvanç; İlday, F. ÖmerWe propose use of a short PM-fiber section as birefringent medium to construct an all-fiber Lyot filter, with bandwidth adjustable through the PM-fiber length. An all-fiber all-normaldispersion laser is demonstrated using standard components only. © 2009 Optical Society of America.Item Open Access Sub-50 fs Yb-doped laser with anomalous-dispersion photonic crystal fiber(Optical Society of America, 2013) Zhang, Z.; Şenel, Ç.; Hamid, R.; Ilday, F. Ö.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.