Hybrid fiber laser integrating fast and slow active media for accurate synthesis of high-energy arbitrary optical waveforms by cavity dumping

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Hybrid fiber laser integrating fast and slow active media for accurate synthesis of high-energy arbitrary optical waveforms by cavity dumping. / Nyushkov, Boris ; Ivanenko, Aleksey ; Smirnov, Sergey.

In: Laser Physics Letters, Vol. 19, No. 7, 075104, 07.2022.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{ca2ce041fab84408a120df238737db8b,

title = "Hybrid fiber laser integrating fast and slow active media for accurate synthesis of high-energy arbitrary optical waveforms by cavity dumping",

abstract = "We demonstrate the possibility of the accurate direct laser synthesis of high-energy arbitrary optical waveforms by the programmable driving of partial cavity dumping in a specific continuous-wave fiber laser. To this effect we have developed an original hybrid laser configuration which integrates two different active media. The first medium, a semiconductor optical amplifier (SOA), acts as a saturated lumped preamplifier. It features a relatively fast (sub-nanosecond) gain recovery, and thus effectively suppresses the intracavity power fluctuations induced by cavity dumping. The second active medium, an erbium-doped fiber amplifier (EDFA), acts mainly as a booster amplifier. This distributed inertial amplifying medium effectively accumulates pump energy, thereby providing an enhancement of output energy upon cavity dumping. Our simple proof-of-concept laser setup has allowed the synthesis of nanosecond arbitrary optical waveforms with an energy up to 40 nJ and arbitrarily tunable repetition rate. The proposed combination of a slow (EDFA) and fast (SOA) amplifying stages prevents the laser from strong relaxation oscillations and power flux fluctuations which essentially restrict cavity dumping in conventional rare-earth-doped fiber lasers. The applied two-stage intracavity spectral filtering ensures spectral purity of a rather narrowband (≤0.1 nm) laser output. For the purpose considered, the integrated SOA-EDFA laser configuration is preferable to a conventional architecture 'master oscillator-power amplifier' whose nonlinear gain can obstruct the accurate synthesis of high-energy optical waveforms. ",

keywords = "cavity dumping, fiber amplifier, fiber laser, optical waveforms, semiconductor optical amplifier",

author = "Boris Nyushkov and Aleksey Ivanenko and Sergey Smirnov",

note = "Funding Information: This work was supported by the Russian Science Foundation (Grant No. 17-72-30006). Publisher Copyright: {\textcopyright} 2022 Astro Ltd.",

year = "2022",

month = jul,

doi = "10.1088/1612-202X/ac6b44",

language = "English",

volume = "19",

journal = "Laser Physics Letters",

issn = "1612-2011",

publisher = "IOP Publishing Ltd.",

number = "7",

}

RIS

TY - JOUR

T1 - Hybrid fiber laser integrating fast and slow active media for accurate synthesis of high-energy arbitrary optical waveforms by cavity dumping

AU - Nyushkov, Boris

AU - Ivanenko, Aleksey

AU - Smirnov, Sergey

PY - 2022/7

Y1 - 2022/7

N2 - We demonstrate the possibility of the accurate direct laser synthesis of high-energy arbitrary optical waveforms by the programmable driving of partial cavity dumping in a specific continuous-wave fiber laser. To this effect we have developed an original hybrid laser configuration which integrates two different active media. The first medium, a semiconductor optical amplifier (SOA), acts as a saturated lumped preamplifier. It features a relatively fast (sub-nanosecond) gain recovery, and thus effectively suppresses the intracavity power fluctuations induced by cavity dumping. The second active medium, an erbium-doped fiber amplifier (EDFA), acts mainly as a booster amplifier. This distributed inertial amplifying medium effectively accumulates pump energy, thereby providing an enhancement of output energy upon cavity dumping. Our simple proof-of-concept laser setup has allowed the synthesis of nanosecond arbitrary optical waveforms with an energy up to 40 nJ and arbitrarily tunable repetition rate. The proposed combination of a slow (EDFA) and fast (SOA) amplifying stages prevents the laser from strong relaxation oscillations and power flux fluctuations which essentially restrict cavity dumping in conventional rare-earth-doped fiber lasers. The applied two-stage intracavity spectral filtering ensures spectral purity of a rather narrowband (≤0.1 nm) laser output. For the purpose considered, the integrated SOA-EDFA laser configuration is preferable to a conventional architecture 'master oscillator-power amplifier' whose nonlinear gain can obstruct the accurate synthesis of high-energy optical waveforms.

AB - We demonstrate the possibility of the accurate direct laser synthesis of high-energy arbitrary optical waveforms by the programmable driving of partial cavity dumping in a specific continuous-wave fiber laser. To this effect we have developed an original hybrid laser configuration which integrates two different active media. The first medium, a semiconductor optical amplifier (SOA), acts as a saturated lumped preamplifier. It features a relatively fast (sub-nanosecond) gain recovery, and thus effectively suppresses the intracavity power fluctuations induced by cavity dumping. The second active medium, an erbium-doped fiber amplifier (EDFA), acts mainly as a booster amplifier. This distributed inertial amplifying medium effectively accumulates pump energy, thereby providing an enhancement of output energy upon cavity dumping. Our simple proof-of-concept laser setup has allowed the synthesis of nanosecond arbitrary optical waveforms with an energy up to 40 nJ and arbitrarily tunable repetition rate. The proposed combination of a slow (EDFA) and fast (SOA) amplifying stages prevents the laser from strong relaxation oscillations and power flux fluctuations which essentially restrict cavity dumping in conventional rare-earth-doped fiber lasers. The applied two-stage intracavity spectral filtering ensures spectral purity of a rather narrowband (≤0.1 nm) laser output. For the purpose considered, the integrated SOA-EDFA laser configuration is preferable to a conventional architecture 'master oscillator-power amplifier' whose nonlinear gain can obstruct the accurate synthesis of high-energy optical waveforms.

KW - cavity dumping

KW - fiber amplifier

KW - fiber laser

KW - optical waveforms

KW - semiconductor optical amplifier

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UR - https://www.elibrary.ru/item.asp?id=48720925

UR - https://www.mendeley.com/catalogue/961e30b5-8c95-33ac-b4cc-d64b66dfd7a7/

U2 - 10.1088/1612-202X/ac6b44

DO - 10.1088/1612-202X/ac6b44

M3 - Article

AN - SCOPUS:85131675983

VL - 19

JO - Laser Physics Letters

JF - Laser Physics Letters

SN - 1612-2011

IS - 7

M1 - 075104

ER -

ID: 36435202