High-Power Two-micron Fibre Lasers
High power two micron fibre bulk hybrid lasers
... Tm-doped fibre lasers would be affected by using ultra high-power (>300W) low brightness pump sources, and to consider ways to increase the effective numerical aperture of the inner-cladding ...
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High power fibre lasers
... both lasers and amplifiers operate, they show a similar ...the fibre facets. The optical gain achieved after lasers and amplifiers are pumped to reach high population inversion is the way of ...
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High power pulsed ytterbium doped fibre lasers and their applications
... state lasers, which use birefringent gain crystals, fibre lasers in general have an obvious drawback in that the output beam polarisation is ...of fibre. A single mode fibre is not ...
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Fabrication of novel geometry fibre lasers for high power applications
... little fibre for the time consumed in fabricating the preform, hence a larger solution was ...ribbon fibre fabricated from a small preform was tested in collaboration and achieved ∼ 440mW from a seven core ...
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High Power Lasers and New Applications
... of high conductivity and spread on the ...the high- precision measurements of electric field and current on the orbital scales and the measurements of the integral activity of thunderstorm ...complete ...
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High average power planar waveguide lasers
... pump power of 272W but this performance could not last due to waveguide ...predict power scalability of this laser system, a 50µm Yb:YAG waveguide laser was ...output power could be obtained with ...
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High power lasers and ecology of atmosphere (I)
... of lasers. Thus, powerful lasers are capable of organizing the extensive plasma cylinders in air, which could initiate and direct the lightning dis- charges similar to metallic wire in the trigger lightning ...
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High power disk lasers: advantages and prospects
... of high-frequency modulation of the output from high-power laser sources is due to the regenerative ampli- fication of a small signal injected into the cavity of a high-power gas or ...
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Welding with high power fiber lasers - A preliminary study.
... These lasers have operated flawlessly on a multiple-shift basis, demonstrating their reliability and providing performance data only possible with much larger ...300 micron final fiber diameter, cuts 4 ...
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Pulses on Demand in Fibre and Hybrid Lasers
... gain-switched fibre laser was realized by using an advanced pump system in a ytterbium-doped fibre oscillator and a pump-recovery ...generated high-power pump pulses with a duration from 500 ...
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High power ultra-short pulse quantum-dot lasers
... into two branches by a beam splitter. The two replicas are used for generation of a time delay τ between them by means of two independent delay lines (fix and ...
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PM double-clad fibers for high power lasers and amplifiers
... A high quality synthetic quartz tube is used to deposit the rare earth doped ...MCVD. Two holes of the desired dimension are drilled, diametrically opposite to each other and on either side of the core, in ...
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Research and development of thulium-doped fibre lasers
... The high power, ...output power stability and beam quality (M 2 ≤ 1.86). The highest recorded power for the laser was 63 W at ~118 W of launched pump ...of fibre involved, the ...
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Theory of direct and indirect effect of two-photon absorption on nonlinear optical losses in high power semiconductor lasers
... for high-power operation in a broad range of ...the two “extreme” positions (near the centre of the waveguide and near the p-cladding) within the whole range of current ...
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Advanced waveguides for high power optical fibre sources
... for high power optical fibre sources ...be high. In order to keep this gain at reasonable values, the fibre must be short, often even too short for adequate pump ...-doped fibre ...
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Design of Two Stage Operational Amplifier with High Gain and High CMRR in Deep Sub-Micron Technology
... CMOS two stage operational amplifier and a test schematic for Current Steering Digital to Analog Converter ...obtain high gain and high ...the two stage op-amp as an integral component and ...
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DIODE PUMP REQUIREMENTS FOR HIGH POWER FIBER LASERS Paper (501)
... Pumping at 976nm has two distinct advantages over other pump wavelengths. Due to the lower quantum defect than at shorter wavelengths, higher efficiencies may be obtained by pumping at 976nm. More significantly, ...
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High power picosecond lasers enable higher efficiency solar cells.
... Wafer processing times as low as 2.5 seconds per wafer will be obtained based on a cell design with two 1 mm wide busbars and 1 mm spacing between ~30 µm wide fingers. With this approach, a 1% increase in absolute ...
5
Linewidth and phase noise characteristics of DFB fibre lasers
... Pump power: 100mW. Resolution BW: 1 kHz; Video BW: 300 Hz. The relatively high pump powers involved here and the strong pump absorption afforded by the Yb/Er in the fiber core - the fiber small signal ...
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Advanced high power pulsed fibre laser systems and their applications
... effects High-power fibre based devices have excellent thermal properties due to the unique heat dissipation along the fibre ...in power scaling to high average ...in power ...
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