High-efficient kW-level single-mode ytterbium fiber lasers in all-fiber format with diffraction-limited beam at wavelengths in 1000-1030 nm spectral range

Platonov, N.S.; Shkurikhin, O.; Fomin, V. V.; Myasnikov, D. V.; Yagodkin, Roman; Ferin, A.; Doronkin, Alexey; Ulyanov, Ivan; Gapontsev, Valentin

doi:10.1117/12.2547021

Cited by 6 publications

(4 citation statements)

References 5 publications

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“…photon density rises and causes a heat shock there. In this case, beats of light can be observed in the fiber, which was seen in the experiments related to [18] when the YDF length was much longer than the optimum length, and led to breaking of the active fiber from a point inside the cavity.…”

Section: Theoretical Studymentioning

confidence: 87%

“…1010-1030 nm fiber lasers [13][14][15][16] are very suitable to use as pump sources in tandem pumped Yb-doped fiber amplifiers (and leads to higher output beam power for Er-, Tm-, and Ho-doped fiber lasers respectively using 1480-1530 nm, 1180/1600/1900 nm and 1150/1950 nm fiber lasers as the pumping system [17]). Recently, Platonov et al [18] reported a kW level 1030 nm Yb-doped fiber laser with near-diffractionlimited beam quality (M 2 < 1.1). In this paper, we investigate, theoretically and experimentally, a high power 1030 nm fiber laser.…”

Section: Introductionmentioning

confidence: 99%

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A high power 1030 nm ytterbium doped fiber laser with a near diffraction limited quality using a 20/400 μm active fiber

Jafari¹,

Batebi²,

Sarikhani³

et al. 2022

Laser Phys.

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A 1030 nm ytterbium doped fiber laser (YDFL), made by using a 20/400 μm YDF, was studied both theoretically and experimentally in this article. From the theoretical point of view, it is found that the optimum length for the active fiber with higher than 30 dB suppression of amplified spontaneous emission (ASE) effect is about 7.3 m. However, an output beam with a diffraction limited quality (M 2 = 1.16) and 735 W power with a slope efficiency of 77% and over 30 dB of signal to noise ratio without any sign of ASE was extracted from this YDFL.

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Section: Theoretical Studymentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

A high power 1030 nm ytterbium doped fiber laser with a near diffraction limited quality using a 20/400 μm active fiber

Jafari¹,

Batebi²,

Sarikhani³

et al. 2022

Laser Phys.

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“…Fiber lasers with wavelengths of 980 nm, 1007 nm, 1018 nm, and 1150 nm have attracted significant interest since they are very useful in nonlinear frequency conversion and efficient pumping of other RE-doped fibers which have absorption bands located near these wavelengths. A 1.3 kW, 1018 nm fiber laser with a beam quality M 2 less than 1.1 was reported by IPG Photonics [49].…”

Section: Power Evolution Of Re-doped Fiber Lasersmentioning

confidence: 99%

Brief Review of Recent Developments in Fiber Lasers

Nemova

2024

Applied Sciences

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This review covers the recent achievements in high-power rare earth (RE)-doped fiber lasers, Raman fiber lasers, and Brillouin fiber lasers. RE-doped fiber lasers have many applications such as laser cutting, laser welding, laser cleaning, and laser precision processing. They operate in several wavelength ranges including 1050–1120 nm (ytterbium-doped fiber lasers), 1530–1590 nm (erbium- and erbium–ytterbium-doped fiber lasers), and 1900–2100 nm (thulium- and holmium-doped fiber lasers). White spaces in the wavelength spectrum, where no RE-doped fiber lasers are available, can be covered by Raman lasers. The heat power generated inside the laser active medium due to the quantum defect degrades the performance of the laser causing, for example, transverse-mode instability and thermal lensing. It can even cause catastrophic fiber damage. Different approaches permitting the mitigation of the heat generation process are considered in this review. Brillouin fiber lasers, especially multiwavelength Brillouin fiber lasers, have several important applications including optical communication, microwave generation, and temperature sensing. Recent progress in Brillouin fiber lasers is considered in this review.

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“…Due to the far-reaching impact, mode instability in various fiber laser systems has been under extensive theoretical and experimental investigation in recent years, but most of the work belongs to fiber lasers employing end-coupled cladding-pumping (ECCP) schemes [8,9]. Sidepumping scheme, especially distributed side-coupled cladding-pumped (DSCCP) fiber or GTWave fiber, is another good choice for high power fiber laser systems [13][14][15][16][17], which is one of the important technologies to enable high power scaling of fiber lasers [18][19][20][21][22][23][24]. Impressing power results have been reported in [17,22], where signal fiber with large pump area and backward pumping scheme has been employed to suppress mode instability [17].…”

Section: Introductionmentioning

confidence: 99%

Static and dynamic mode evolution in high-power distributed side-coupled cladding-pumped fiber amplifiers

Tao

Liu

Xie

et al. 2021

High Pow Laser Sci Eng

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We present a theoretical study of mode evolution in high power distributed sidecoupled cladding-pumped (DSCCP) fiber amplifiers. A semi-analytical model taking the side pumping schemes, transverse mode competition and stimulated thermal Rayleigh scattering into consideration has been built, which can model the static and dynamic mode evolution in high power DSCCP fiber amplifiers. The mode evolution behavior has been investigated with variation of fiber amplifier parameters, such as the pump power distribution, the length of the DSCCP fiber, the averaged coupling coefficient, the number of the pump cores, and the arrangement of pump cores. Interestingly, it revealed that static mode evolution induced by transverse mode competition is different from the dynamic ones induced by stimulated thermal Rayleigh scattering. It shows that the high order mode experiences slightly higher gain in DSCCP fiber amplifiers, but the mode instability thresholds for DSCCP fiber amplifiers are higher than those end-coupled counterparts. By increasing the pump core number and reducing the averaged coupling coefficient, the mode instability threshold can be increased, which

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High-efficient kW-level single-mode ytterbium fiber lasers in all-fiber format with diffraction-limited beam at wavelengths in 1000-1030 nm spectral range

Cited by 6 publications

References 5 publications

A high power 1030 nm ytterbium doped fiber laser with a near diffraction limited quality using a 20/400 μm active fiber

A high power 1030 nm ytterbium doped fiber laser with a near diffraction limited quality using a 20/400 μm active fiber

Brief Review of Recent Developments in Fiber Lasers

Static and dynamic mode evolution in high-power distributed side-coupled cladding-pumped fiber amplifiers

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