The generation of 236 mW of second-harmonic power in a 32-cm-long periodically poled
silica fiber, corresponding to an average conversion efficiency of 15.2±0.5%, is reported …

We show that germanium-doped graded-index multimode silica fibers can exhibit relatively
high conversion efficiencies (∼ 6.5%) for second-harmonic generation when excited at …

Broadband tunability of the second-harmonic wavelength is achieved in periodically poled
silica fibers. A wavelength tuning range of almost 45 nm of the fundamental wave is …

D-shape silica fibres have been periodically poled at an elevated temperature by applying
high voltage via a patterned electrode deposited on the plane side. The resulting nonlinear …

Third‐harmonic generation of 1.319 μm Nd: YAG laser pulses in circular‐core GeO2‐doped
silica single‐mode fibers is reported. The experimental results have shown that the blue …

We report efficient second-harmonic generation in several commercially available
telecommunication-grade single-mode and multimode optical fibers. We have investigated …

Optical microfibres have recently attracted much attention for nonlinear applications, due to
their tight modal confinement. Here, we report broadband third harmonic generation based …

In recent months great interest has been focused on the problem of efficient frequency
doubling in optical fibers. Conversion efficiencies of up to 5% from infrared OR) light to …

Phase-matched electric-field-induced second-harmonic generation is demonstrated in
single-mode germania-doped silica fibers. A periodic second-order nonlinearity is induced …

Experiments were carried out in order to investigate efficient second-harmonic generation in
phosphor-doped glass fibers. Peak conversion efficiencies> 5% corresponding to peak …