Experimental investigation of a high-power 1018  nm fiber laser using a 20/400  μm ytterbium-doped fiber

Lafouti, Majid; Latifi, Hamid; Fathi, Hossein; Ebrahimzadeh, Saeid; Sarikhani, S.; Sarabi, Hassan

doi:10.1364/ao.58.000729

Cited by 12 publications

(6 citation statements)

References 25 publications

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“…Tandem pumping refers to a technique in which high-brightness lasers are implemented as pumping sources. Owing to its unique potential for power scaling, it has been achieved great attention in the last decade [19,[86][87][88][89][90][91][92][93][94][95]. In 2010, IPG photonics corporation reported the first 10 kW level single-mode fiber laser via the TP scheme by utilizing fortyseven 270 W YDFLs operating at 1018 nm as pumping sources [96].…”

Section: Tandem Pumpingmentioning

confidence: 99%

Towards Ultimate High-Power Scaling: Coherent Beam Combining of Fiber Lasers

2021

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Fiber laser technology has been demonstrated as a versatile and reliable approach to laser source manufacturing with a wide range of applicability in various fields ranging from science to industry. The power/energy scaling of single-fiber laser systems has faced several fundamental limitations. To overcome them and to boost the power/energy level even further, combining the output powers of multiple lasers has become the primary approach. Among various combining techniques, the coherent beam combining of fiber amplification channels is the most promising approach, instrumenting ultra-high-power/energy lasers with near-diffraction-limited beam quality. This paper provides a comprehensive review of the progress of coherent beam combining for both continuous-wave and ultrafast fiber lasers. The concept of coherent beam combining from basic notions to specific details of methods, requirements, and challenges is discussed, along with reporting some practical architectures for both continuous and ultrafast fiber lasers.

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Section: Tandem Pumpingmentioning

confidence: 99%

Towards Ultimate High-Power Scaling: Coherent Beam Combining of Fiber Lasers

2021

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“…Tandem pumping refers to a technique in which high brightness lasers are implemented as pumping sources. Owing to its unique potential for power scaling, it has been achieved great attention in the last decade [19,[86][87][88][89][90][91][92][93][94][95]. In 2010, IPG photonics corp. reported the first 10 kW level single-mode fiber laser via TP scheme by utilizing forty-seven 270 W YDFLs operating at 1018 nm as pumping sources [96].…”

Section: Tandem Pumpingmentioning

confidence: 99%

“…To suppress these deleterious effects, shortening the fiber length and using the high core/clad diameter ratio fibers are utilized. There has been ongoing research on producing high power 1018 nm fiber laser with diffraction-limited beam quality, to date, the highest output power of the YDFLs operating at 1018 nm fiber laser has been reported by Yan et al, as 1150 W [89,[91][92][93][94][95]. Although the highest record for achievable output power via TP scheme is predicted to be 52 kW [18], to date it has reached 20 kW [13].…”

Section: Tandem Pumpingmentioning

confidence: 99%

Towards Ultimate High-power Scaling: Coherent Beam Combing of Fiber Lasers

Fathi¹,

Närhi²,

Gumenyuk³

2021

Preprint

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Fiber laser technology has been demonstrated as a versatile and reliable approach for laser source manufacturing with a wide range of applicability in various fields ranging from science to industry. The power/energy scaling of single fiber laser systems has faced several fundamental limitations. To overcome them and to boost the power/energy level even further, combining the output powers of multiple lasers has become the primary approach. Among various combining techniques, the coherent beam combining of fiber amplification channels is the most promising approach, instrumenting ultra-high power/energy lasers with near-diffraction-limited beam quality. This paper provides a comprehensive review of the progress of coherent beam combining for both continuous-wave and ultrafast fiber lasers. The concept of coherent beam combining from basic notions to specific details of methods, requirements, and challenges are discussed, along with reporting some practical architectures for both continuous and ultrafast fiber lasers.

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“…However, it is very challenging to construct the high-power Yb fibre MOPA at 1018 nm since the broadband ASE signal in the wavelength regime from 1030 nm to 1100 nm is amplified simultaneously along with the laser signal at 1018 nm and, as a result, disturbs robust laser operation of the MOPA at 1018 nm. It is already reported that laser operation of the YDFL at 1018 nm requires aggressive suppression of the ASE signal by >30 dB relative to the laser signal [28,30], but it is very difficult to make such a large difference even by using an optical isolator or a bandpass filter in amplifier chains. Thus, there are only a few reports in the Yb fibre MOPA at 1018 nm, where the highest output power was around 100 W [31,32] using a typical Yb-doped double-cladding fibre with the step-index refractive profile.…”

Section: Introductionmentioning

confidence: 99%

High-power ytterbium-doped fibre master-oscillator power-amplifier at 1018 nm

Park¹,

Oh²,

Park³

et al. 2022

Laser Phys.

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A high-power master-oscillator power-amplifier (MOPA) at 1018 nm employing ytterbium (Yb)-doped fibres as a gain medium is reported. Utilizing a diffraction grating as a reflector, we could successfully suppress the influence of the broadband amplified spontaneous emission on the master-oscillator or the power-amplifier, resulting in stable amplification of the laser signal at 1018 nm. Based on a simple theoretical simulation on gain spectra and experimental investigation on parasitic lasing thresholds, the Yb fibre MOPA constructed in-house yielded 220 W of output at 1018 nm with a beam propagation factor (M2) of 1.1. The prospects for further power scaling are considered.

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Experimental investigation of a high-power 1018 nm fiber laser using a 20/400 μm ytterbium-doped fiber

Cited by 12 publications

References 25 publications

Towards Ultimate High-Power Scaling: Coherent Beam Combining of Fiber Lasers

Towards Ultimate High-Power Scaling: Coherent Beam Combining of Fiber Lasers

Towards Ultimate High-power Scaling: Coherent Beam Combing of Fiber Lasers

High-power ytterbium-doped fibre master-oscillator power-amplifier at 1018 nm

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