The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Pulses from an ultrafast oscillator are conditioned, amplified, and delivered in an all-optical-fiber architecture. Combined with an electro-optic receiver, the complete system delivers a 4-V electrical trigger with less than 400 fs additive jitter.
A novel type of hybrid amplifier/wavelength converter is presented, coupling a TDFA and a FOPA module in series. Signal amplification over the entire S-Band (1450-1530 nm) and signal-to-idler conversion from 1540-1630 nm is demonstrated.
Powerful ultrashort pulses are generated using a hybrid MOPA consisting of a passively mode-locked semiconductor laser and a Yb-doped fiber amplifier. Pulses 2 ps in duration are amplified to an average power of 0.8 W.
We present characterization of a fiber laser based on newly developed erbium and ytterbium doped double-clad fiber with cross section tailored for direct splicing with the pump and signal fibers.
In the pulse application, a significantly increased efficiency of high power largemode area fiber amplifiers is demonstrated by improving the overlap of the doped region with the fundamental mode of the fiber.
Brillouin properties of doped fibers are reported for the first time. The characterized fibers present Brillouin frequency shift variation that we attribute to fiber composition. A thermally induced evolution of Brillouin spectrum has been observed.
We have derived an explicit analytical expression for the gain of a Brillouin fiber amplifier operating in the depleted pump regime. The accuracy of the obtained formula is validated both numerically and experimentally.
We demonstrate propagation and compression of 14-nJ, 152-fs pulses in the 2100-mum2 effective area, LP07 mode of an intentionally multi-moded fiber. The 12-m length of fiber was coiled to a radius of curvature of 7.5 cm.
We have demonstrated a polarization-interleaved WDM system with a two-orthogonal-pump OPA (2OP-OPA). The sensitivity has been improved by about 2 dB compared to its counterpart with all WDM channels co-polarized with the same signal gain.
All-fiber chirped-pulse amplification based on a large-mode-area Er:Yb-doped photonic-crystal fiber is presented. A dispersion-variable hybrid fiber stretcher compensates the peculiar dispersion of the hollow-core photonic-bandgap fiber compressor yielding transform-limited 440-fs pulses with 1-W average power.
We demonstrate engineered refractive index profiles for the mitigation of nonlinear optical impairments such as stimulated Raman scattering and stimulated Brillouin scattering. These fibers offer performance improvements over conventionally used large mode area fibers.
We fabricate a sub-ps erbium doped fiber laser using a carbon nanotube-polymer composite mode-locker. The spectral and pulse width data are analysed to evaluate the contribution of different physical process into ultra-short lasing.
We report using short, heavily-doped active phosphate fiber for generation of picosecond pulses at 1.5 mum, with the peak power of 19 kW which results in a record-high aerial power density of 24 GW/cm2 in the fiber core.
We report the first continuous-wave Yb3+-doped phosphate fiber laser. 12 W of diffraction-limited, 1.06-mum power was generated from a 71-cm length of double-clad fiber with 34 W of absorbed pump power.
We describe a 1080-nm diode master oscillator utilizing a fiber Fabry-Perot tunable filter with subsequent fiber amplification to 9 W output power. 25 MHz linewidth and 5 THz tuning in less than 1 ms were achieved.
We demonstrate the accuracy of commercial telecommunications industry software for modelling Yb-fiber amplifiers. Simulations enabled optimisation of a broad bandwidth ultra-short pulse four-stage amplifier system. The predicted results were confirmed by experiments.
4.6 ps pulses at 910 MHz produced by a passively mode-locked VECSEL were amplified by ytterbium doped fiber amplifiers to average powers greater than 200 W and subsequently compressed to 430 fs duration.
We report on the realization of FBGs in a standard Er-doped fiber written into the non-photosensitive core by femtosecond laser pulses. Efficient laser operation is demonstrated using this technique.
We demonstrate 314 W continuous-wave output power at 1077 nm from a Yb-doped fiber laser with a truly single-mode core. The core employed a W-type refractive index profile that suppressed detrimental stimulated Raman scattering through spectral filtering.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.