5,427 research outputs found
Ultra-broadband wavelength conversion based on four-wave mixing in a Raman DFB fiber laser
No full textWe report highly efficient four-wave mixing (FWM) within a 30cm-long centre pi phase-shifted Raman DFB fiber laser with a continuous frequency tuning range of ~19.9 THz with the FWM conversion efficiency up to -25dB
High pulse energy picosecond MgO:PPLN optical parametric oscillator using a single-mode fiber for signal feedback
No full textWe demonstrate a high-pulse-energy, synchronously-pumped (7.19MHz), 100ps, widely tunable MgO:PPLN OPO providing 0.49µJ pulses at 1.5µm and 0.19µJ pulses at 3.6µm. A single-mode fiber is employed in the OPO to keep the 42m-long cavity compact
200W gain-switched-diode-seeded single-polarization narrow linewidth all-fiber picosecond MOPA
No full textWe report a fully fiberized, single-polarization, gain-switched, diode-seeded fiber MOPA delivering 28ps pulses at a repetition frequency of 214MHz with 200W of average output power and up to 0.93µJ pulse energy
High power, low threshold, Raman DFB fibre lasers
No full textWe demonstrate highly efficient Raman gain based distributed-feedback fibre lasers at ~1.11µm with up to 2W CW output-power with <0.01nm linewidth. The lasers are 30cm long and UV-written directly into two types of passive germanosilicate fibres
Ultra-wide range wavelength conversion using FWM in a Raman DFB fiber laser
No full textWe demonstrate for the first time to our knowledge, four-wave-mixing (FWM) in a 30cm-long center p phase-shifted Raman distributed-feedback (DFB) fiber laser. The FWM-to-signal conversion efficiency is -24dB and the wavelength conversion range is 94.1nm
Highly efficient, high power, inband-pumped Erbium/Ytterbium-codoped fiber laser
No full textA highly efficient (~80%), high power (18.45W) in-band pumped Erbium/Ytterbium-codoped fiber laser is demonstrated. Based on a fitted simulation model, the detrimental effect of pair induced quenching in high power operation is also highlighted
Raman DFB fiber laser with truly unidirectional output
No full textWe report a single-frequency, kilohertz-linewidth (We report a single-frequency, kilohertz-linewidth (<2.5kHz), 30cm-long Raman distributed-feedback fiber laser with unidirectional output. The threshold power, slope efficiency and maximum output power are observed to be ~980mW, 7.7% and 296mW respectively
High-energy, in-band, cladding-pumped erbium doped pulsed fiber lasers
No full textWe demonstrate a high-energy in-band, cladding-pumped MOPA at 1563nm that is >1.5 times more efficient than the equivalent core pumped MOPA variant. A maximum pulse energy of 1.4mJ was obtained for 159ns pulses with M2=1.5
Single-frequency Raman distributed-feedback fiber laser
No full textWe report a 30cm-long Raman Distributed-feedback laser with ~450mW threshold in a commercial Ge/Si fiber. The laser is pumped with up to 1.3W-CW at 1064nm and exhibits single frequency performance with a linewidth <2.5kHz at 1109.5nm
A picosecond optical parametric oscillator synchronously pumped by an amplified gain-switched laser diode
No full textWe demonstrate a picosecond optical parametric oscillator synchronously pumped by a fiber-amplified gain-switched laser diode. Up to 7.3W at 1.54µm and 3.1W at 3.4µm is obtained at pulse repetition rates between 114.8 and 918.4MHz
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