A 160 W single-frequency laser based on an active tapered double-clad fiber amplifier

Trikshev, A. I.; Kurkov, Andrei S; Цветков, В. Б.; Filatova, Serafima A.; Kertulla, J.; Филиппов, В. Н.; Chamorovskiy, Yuri K.; Okhotnikov, Oleg G.

doi:10.1088/1612-2011/10/6/065101

Cited by 39 publications

(23 citation statements)

References 14 publications

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“…By this technique, they improved the SBS threshold by at least four times. The use of tapered amplifiers has also allowed to reach high continuous power with free space pumping [14][15][16][17]. For those configurations, the use of free space coupling or implementing calibrated strains along the active fiber are less compatible with industrial laser standards relying on robustness and reliability.…”

Section: Introductionmentioning

confidence: 99%

Ultra-low intensity noise, all fiber 365 W linearly polarized single frequency laser at 1064 nm

Dixneuf¹,

Guiraud²,

Bardin³

et al. 2020

Opt. Express

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We demonstrate a robust linearly polarized 365 W, very low amplitude noise, single frequency master oscillator power amplifier at 1064 nm. Power scaling was done through a custom large mode area fiber with a mode field diameter of 30 µm. No evidence of stimulated Brillouin scattering or modal instabilities are observed. The relative intensity noise is reduced down to −160 dBc/Hz between 2 kHz and 10 kHz via a wide band servo loop (1 MHz bandwidth). We achieve 350 W of isolated power, with a power stability < 0.7% RMS over 1100 hours of continuous operation and a near diffraction limited beam (M 2 < 1.1).

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Section: Introductionmentioning

confidence: 99%

Ultra-low intensity noise, all fiber 365 W linearly polarized single frequency laser at 1064 nm

Dixneuf¹,

Guiraud²,

Bardin³

et al. 2020

Opt. Express

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“…In our case operation wavelength is 1.5 times higher -it is 1550 nm, so we may reach single mode operation even with 50 µm core design. Moreover there are several new fiber designs like a chirally-coupled-core fibers [12] and fiber tapers [13] with should allow reach single-mode operation regime with core diameter of 50 µm. The calculated distribution of signal power in the same conditions as above but for 50/125 µm core/cladding diameter fiber is presented for core-pumped at 976 (red line) and 1480 nm (magenta) and cladding-pumped at 980 nm (black) schemes (Fig 2).…”

Section: Perspective Increase Of Mode Field Diametermentioning

confidence: 99%

Record peak power single-frequency erbium-doped fiber amplifiers

et al. 2015

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In this work we present results on the amplification of narrow-linewidth nanosecond pulses in a recently developed ytterbium-free erbium-doped large mode area fiber cladding pumped at 980 nm. At first, a co-propagating all-fiber amplifier scheme was used. Using 1 m of active fiber length in such configuration a peak power of 4 kW limited by instabilities caused by stimulated Brillouin scattering (SBS) was achieved. To the best of our knowledge this is the highest peak power ever reported for single-frequency single-mode silica-based fiber sources near 1550 nm.Then all-fiber counter-pumped configuration with 6 m of active fiber was used and peak power of 900 W was obtained. In this case peak power was limited by SBS generation in a passive fiber at the laser output. Slope electrical-to-optical conversion efficiency of 8 % demonstrated in such scheme is a record value for kW-level single-mode single-frequency Er-doped nanosecond fiber lasers.

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“…The large core size significantly increases the threshold of nonlinear effects and allows to extract high peak/average power. Numerous active fiber-optic devices comprising T-DCF have been already demonstrated: kW-class CW single mode fiber lasers 3,4 , high gain and high-power CW amplifiers 5 , ultrafast picosecond amplifiers 6,7 , high power superfluorescent sources 1 and narrow band fiber amplifiers and lasers 8 .…”

Section: Introductionmentioning

confidence: 99%

“…The early works implemented the capabilities of the T-DCFs technology by utilizing the fibers without internal birefringence 1,3,4,5 . Recently, the family of scientific works has increased by experimental demonstration of the passive and active anisotropic tapers with an elliptical core of 70 μm size 9 and stress rods (PANDA type) 7,8 .…”

Section: Introductionmentioning

confidence: 99%

Large mode area double clad ytterbium tapered fiber with circular birefringency

Rissanen¹,

Fedotov²,

Noronen³

et al. 2019

Fiber Lasers XVI: Technology and Systems

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We demonstrated, for the first time to our best knowledge, an active tapered double clad fiber with circular birefringence and 35 μm core diameter. The output radiation had perfect beam quality (M 2 =1.18/1.1) and linearly polarized light with 15 dB of PER. The developed double clad active fiber was investigated for amplification of picosecond pulses in allfiber MOPA system. The MOPA system delivered 50 ps pulses with 55 W of the average power revealed 34.4 dB gain of the booster amplifier.

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A 160 W single-frequency laser based on an active tapered double-clad fiber amplifier

Cited by 39 publications

References 14 publications

Ultra-low intensity noise, all fiber 365 W linearly polarized single frequency laser at 1064 nm

Ultra-low intensity noise, all fiber 365 W linearly polarized single frequency laser at 1064 nm

Record peak power single-frequency erbium-doped fiber amplifiers

Large mode area double clad ytterbium tapered fiber with circular birefringency

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