Millijoule pulse energy 100-nanosecond Er-doped fiber laser

Kotov, Leonid V.; Likhachev, Mikhail E.; Bubnov, M M; Medvedkov, O.I.; Lipatov, Denis S.; Gur'yanov, A N; Zaytsev, Kirill I.; Jossent, Mathieu; Fevrier, Sébastien

doi:10.1364/ol.40.001189

Cited by 61 publications

(24 citation statements)

References 12 publications

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“…In this case the record pulse energy of 1 mJ in 100 ns pulses was demonstrated 3 . The maximum peak power of 13 kW was limited by amplified spontaneous emission (ASE), which was appeared due to limited stored energy in the EDFA.…”

Section: Introductionmentioning

confidence: 81%

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Cladding-pumped 70-kW-peak-power 2-ns-pulse Er-doped fiber amplifier

Khudyakov

Bubnov

Senatorov

et al. 2018

Fiber Lasers XV: Technology and Systems

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An all-fiber pulsed erbium laser with pulse width of 2.4 ns working in a MOPA configuration has been created. Cladding pumped double clad erbium doped large mode area fiber was used in the final stage amplifier. Peculiarity of the current work is utilization of custom-made multimode diode wavelength stabilized at 981±0.5 nm -wavelength of maximum absorption by Er ions. It allowed us to shorten Er-doped fiber down to 1.7 m and keep a reasonably high pump-to signal conversion efficiency of 8.4%. The record output peak power for all-fiber amplifiers of 84 kW was achieved within 1555.9±0.15 nm spectral range.

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Section: Introductionmentioning

confidence: 81%

“…The EDFA2 delivered pulses with average power of 10 mW (200 W of peak power). Part of power between pulses was controlled by integrating photodetector 3 and was less than 3% at all pump powers. The seed was coupled through isolator and pump combiner into the power amplifier stage.…”

Section: Introductionmentioning

confidence: 99%

Cladding-pumped 70-kW-peak-power 2-ns-pulse Er-doped fiber amplifier

Khudyakov

Bubnov

Senatorov

et al. 2018

Fiber Lasers XV: Technology and Systems

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“…The Er-doped fiber design is based on utilization of ternary P 2 O 5 -Al 2 O 3 -SiO 2 glass for fabrication of an Er-doped core [7]. This glass matrix (1) has a refractive index similar to that of undoped silica glass.…”

Section: Pm Lma Edf Designmentioning

confidence: 99%

Monolithic high peak-power coherent Doppler lidar system

et al. 2016

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In this work we present a monolithic lidar system, based on a newly-developed double-clad large mode area (LMA) polarization-maintaining Er-doped fiber and specially designed LMA passive components. Optimization of the fiber designs resulted in as high as 100 W of SBS limited peak power. The amplifier and its passive components (circulator and collimator) were integrated in an existing lidar system. The enhanced lidar system provides three times increase of scanning range compared to one based on standard telecom-grade amplifiers.

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“…Er-doped fiber lasers emitting around 1550 nm optical wavelength are capable to produce hundreds of Watts [1] and Millijoule pulse energy [2,3]. However, for space applications those lasers have to fulfill additional requirements set by the harsh environment, typically characterized by large temperature gradients, vibration and shock as well as different kinds of radiation.…”

Section: Introductionmentioning

confidence: 99%

Design optimization of fiber amplifiers exposed to high gamma-radiation doses

Vries

Thomas

Eberhardt

et al. 2017

International Conference on Space Optics — ICSO 2016

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I. INTRODUCTIONFiber lasers entered numerous applications due to their high efficiency and superior stability. Er-doped fiber lasers emitting around 1550 nm optical wavelength are capable to produce hundreds of Watts [1] and Millijoule pulse energy [2,3]. However, for space applications those lasers have to fulfill additional requirements set by the harsh environment, typically characterized by large temperature gradients, vibration and shock as well as different kinds of radiation. To meet those requirements, the realization of an all-fiber design and thus, an adjustment-free laser is most beneficial [4,5]. One of the most important aspects for long term operation in space is the influence of ionizing radiation, which typically leads to strong absorptions in active fibers [6,7]. As a result, radiation-resistant fibers are recommended [8,9]. Nevertheless, the performance of fiber amplifiers has to be considered including these radiation-induced absorption losses during mission lifetime.In this contribution, an experimental as well as a numerical study on an Er-doped single-clad fiber-based preamplifier system was conducted. Due to the low seed power and the high gain, the double-pass type setting is most sensitive to the influence of core-size, doping concentration and ionizing radiation. In section II, the performance of five different fibers is experimentally investigated and compared, followed by a numerical study on the impact of radiation-induced gain reduction in section III. The presented results can be conceived as a guideline how to design a low seed power high-gain preamplifier for use in space.

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Millijoule pulse energy 100-nanosecond Er-doped fiber laser

Cited by 61 publications

References 12 publications

Cladding-pumped 70-kW-peak-power 2-ns-pulse Er-doped fiber amplifier

Cladding-pumped 70-kW-peak-power 2-ns-pulse Er-doped fiber amplifier

Monolithic high peak-power coherent Doppler lidar system

Design optimization of fiber amplifiers exposed to high gamma-radiation doses

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