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Tunable all-optical fine control of pulse width via doublet Brillouin gain lines was demonstrated in a short 204-m-long nonlinear single-mode tellurite fiber. Gaussian pulse shaping with a compression ratio ranging from 1.17–0.27 was achieved after the input square pulse was amplified by the modulated Brillouin gain in this tellurite fiber.
Optical properties required for the design of a solar pumped fiber laser were evaluated for Er3+-fluoride glass. The quantum efficiency of the emission band at 1530 nm was about 35 %. The product of the stimulated emission cross-section and the emission lifetime σstτf was about 46×10−24 cm2·s.
A simple all-solid tellurite microstructured optical fiber which has only one layer of high-index rods is proposed and fabricated. The core and cladding are made from the TeO2-ZnO-Na2O-La2O3 glass, and the high-index rods are made from the TeO2-Li2O-WO3-MoO3-Nb2O5 glass.
Elaboration of low-losses highly non linear chalcogenide optical fibers for the generation of efficient non linear effects in the infrared remains a challenge. In recent years, much work has been devoted to the study of microstructured optical fibers (MOFs) with different designs and various elaboration processes. Their background losses were typically of several dB/m.
We report broad near-infrared soliton and associated dispersive wave source generation by LP11 mode excitation in a few-mode tellurite microstructured fiber pumped by a 1557 nm femtosecond fiber laser.
A dispersion controlled highly nonlinear tellurite complex microstructure fiber whose chromatic dispersion is flatter than that of the previous ones is realized. Broad supercontinuum generation was demonstrated under the several hundred pJ femtosecond pulse pumping.
We report what we believe to be the first demonstration of the second, third harmonics and flattened supercontinuum generation in tellurite microstructure fibers pumped by a 1557 nm femtosecond fiber laser.
We report what we believe to be the first demonstration of supercontinuum generation from UV to 3.85 mum in a 2.5 cm long fluoride fiber pumped by a 1450 nm femtosecond laser.
We report what we believe to be the first demonstration of flat supercontinuum generation expanding from 1000 to 2100 nm from a microstructure tellurite fiber pumped by a tunable ultrafast laser source.
The CW laser operation at 542.8 nm have been successfully demonstrated using Tb3+-doped fluoride fiber for the first time. The laser transition of Tb3+ doped in fluoride fiber is analyzed.
We demonstrate what we believe to be the first demonstration of stable gain-switched 845-nm pulse generation by a weak modulated 1550-nm seed laser from an Er3+-doped fluoride fiber pumped by a CW 974 nm LD.
We report the dependence of Brillouin linewidths on the pump power below the threshold of Brillouin lasing in a silica fiber, and explain these experimental results by the distributed fluctuating source model.
We demonstrate highly-efficient Brillouin slow-light-generation in a low loss tellurite fiber. A time-delay of 74 ns is achieved for an input pulse of 40 ns width in a 200 m long fiber with a pump power of 19.7 mW.
The energy transfer coefficients for Tb3+-Yb3+-codoped silicate glasses was obtained by a rate equation model. The proposed model can be used to understand the amplification properties in the 0.54 mum band under the 0.98 mum pumping.
In this study, we investigate the possibilities of Yb3+-Tb3+ cooperative energy transfer process which enable the 0.98 μm pumping for Tb3+ ions using various host glasses. The energy transfer efficiency as high as 60plusmn11 % was observed for the first time in a borosilicate glass and it was found out that Tb3+-Yb3+-codoped borosilicate glass was a promising candidate for the 0.54 μm band laser medium...
The energy transfer efficiency as high as 68 % between Tb3+ and Yb3+ in Tb3+-Yb3+-codoped silicate glasses was obtained for green emission. The energy transfer mechanisms were analyzed by rate equation formalism.
We report cascaded two-wavelength 853 nm and 1533 nm lasing from Er3+-doped fluoride fiber pumped at 974 nm. A new way to get high efficiency and low noise C-band amplifier is suggested for Er3+-doped fibers with low phonon energy.
We demonstrate a 16.5 dB all-fiber optical amplifier at 546 nm using Er 3+-doped fluoride fiber for -30 dBm signal power by forward upconversion pumping of a 974 nm laser diode with power of 225mW.
In this paper, we report cascaded two-wavelength 853-nm (4 S3/2rarr4I13/2 transition) and 1533-nm (4I13/2rarr4I15/2 transition) lasing from Er3+-doped fluoride fiber pumped at 974 nm. The cavity for cascaded two-wavelength lasing is composed of two fiber ends with 4% Fresnel reflection. Its optical-to-optical efficiency is up to 26.6%. Its effects on C-band fiber amplifiers and green upconversion...
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