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By using a rigorous modeling method, the SPR properties in a helical PCF has been simulated for the first time and the resonance effects have been studied by using finite element method. The results show that spiral path will increase propagation loss, but resonance peak values of the spectrum decrease. This is due to a light dispersion away from the center core, causing the energy transfer reduction...
An Yb-doped, all-polarization-maintaining fiber laser oscillator with a nonlinear amplifying loop mirror is presented in this letter. A new compact non-reciprocal phase shifter biased fiber loop mirror was engaged inside the fiber laser, which results in a low threshold and stable mode locking. With a 2.8-nm filter inside the cavity, the mode locked output power is 4.1 mW with the repetition rate...
The advanced laser technology has led to gigahertz level repetition rate femtosecond fiber laser possible. This laser offers advantages of high average power, chirp-free output pulses and helps the frequency comb made compact and simplified.
We demonstrated a near all-fiber femtosecond Yb:laser frequency comb incorporated with three different photonic crystal fibers. The comb removes most of free-space components so that it is more compact and stable.
We report direct generation of 500MHz Yb:fiber laser frequency comb. The offset frequency was stabilized more than 6 hours in an open air environment. The stabilized repetition rate has an in-loop tracking stability of 4.46×10−13/τ1/2.
We demonstrate the first 1 GHz fundamental repetition rate ring cavity ytterbium doped fiber laser. The laser delivers 600 mW, 64fs near transform-limited pulses and supports direct octave-spanning spectrum generation.
We report a compact Yb:fiber ring laser operated at 616 MHz. The average output power is 450 mW at a pump power of 900 mW. The dechirped pulse width is 98 fs.
We demonstrate sub-50 fs pulses generation directly from a 750 MHz repetition rate dispersion managed Yb: fiber ring laser by precision compensation of the intracavity dispersion.
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