Beating noise in narrow-linewidth erbium-doped fiber ring lasers puts severe limitations on applications of the lasers. We demonstrate the suppression of beating noise in fiber ring lasers by using a semiconductor optical amplifier in the laser cavity, which acts as a high-pass filter. Two different ring structures are presented as examples to demonstrate this beating noise suppression.

We report experimental and numerical results on the dynamics of gain-guided solitons in a passively mode-locked erbium-doped fiber laser made of purely normal dispersion fibers. We show that formation of the soliton in the laser is a result of mutual interaction and balance among the cavity transmission, fiber Kerr nonlinearity, gain saturation, and filtering over one cavity round trip.

We demonstrate a soliton fiber laser based on an anomalously dispersive erbium-doped fiber butt-coupled to a saturable absorber mirror for passive mode locking. The laser generates 180 fs pulses at a repetition rate of 491 MHz and exhibits a timing jitter as low as 20 fs over the frequency range 1 kHz-10 MHz.

Erbium-doped ZBLAN is the most commonly used glass for mid-infrared fiber lasers. In this paper we quantify energy dynamics of erbium ions which important improving performance mid infrared Previous studies have found a discrepancy between strength inter-ion transfer measured in bulk Er:ZBLAN and required to explain current laser performance. We 4I13/2 + -> 4I15/2 4I9/2 process directly range f...

Herein, hydrothermally synthesized hematite nanorods (NRs) co-doped with erbium and titanium, using titanium tetrachloride erbium(III) nitrate pentahydrate as the dopant sources, are presented. The effect of varied volumes erbium/titanium surface co-dopants on morphology, structural, optical, photoelectrochemical (PEC) properties NRs is investigated. pristine hematite, 40 μL -Er, -Er/20 -Ti-dop...

Ternary erbium doped BiVO4/TiO2 complexes are synthesized by means of a simple impregnation method with good photoactivities under sun-like excitation for the degradation of phenol. From the structural and morphological characterization it has been stated that the presence of Er induces a slight stabilization of the tetragonal phase probably due to its incorporation in the BiVO4 lattice. Theref...

Nanocrystalline silicon thin films doped with erbium were produced by reactive magnetron RF sputtering. Their structural and chemical properties were studied by X-ray diffractometry at grazing incidence, micro-Raman, spectroscopic ellipsometry and Rutherford Backscattering Spectroscopy, respectively. Films with different crystalline fraction and crystallite size were deposited. Since the lumine...

We adopt a three-level scheme for the pump – amplification process in 1.48 m pumped Erbium-Doped Fiber Amplifiers, which reproduces the main experimental features of amplifiers with short and long fiber lengths. Continuous wave amplification in a simplified slab waveguide structure is simulated by means of the scalar Beam Propagation Method, taking into account signal and pump propagation throu...