A 3.5 W 977 nm Cladding-pumped Jacketed Air-Clad Ytterbium-Doped Fiber Laser

Yla-Jarkko, K.H.; Selvas, R.; Soh, Daniel B. S.; Sahu, J.K.; Codemard, Christophe A.; Nilsson, Johan; Alam, Shah; Grudinin, A.B.

doi:10.1364/assp.2003.103

Cited by 32 publications

(18 citation statements)

References 3 publications

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“…An M 2 value of 1.09 was obtained, implying that the output beam was single-moded and nearly diffraction limited. Compared to our earlier results using a JAC fiber structure [6], this fiber has a larger inner-cladding area. Although the large innercladding results in a much higher 980-nm laser threshold, it does allow for pumping with standard pig-tailed multimode single-emitter laser diodes of relatively low brightness.…”

Section: Experiments and Resultscontrasting

confidence: 63%

“…Commercially available single-mode 980-nm laser diodes are not only limited in output power but are expensive, too. As an alternative, high-power Yb-doped fiber (YDF) sources operating at 980 nm was demonstrated using a jacketed air clad (JAC) structure [4], [6]. These can be scaled to several watts of output and can also be used as amplifiers [4], considerably offering higher peak powers when pulsed [14] than the diodes.…”

Section: Introductionmentioning

confidence: 99%

“…They are pumped by multimode laser diodes at around 915 nm. As explained in [5], the high numerical aperture (NA) and the small inner-cladding (30-µm diameter in [6]) help to improve the efficiency. It becomes easier to reach the laser threshold, which is relatively high.…”

Section: Introductionmentioning

confidence: 99%

“…The corresponding slope efficiencies of the two fibers, with respect to launched pump power were 34% and 49%, respectively. The larger inner cladding of the DCHOF, compared to the previous JAC fiber [4], [6] (without any waveguide filter), enable the use of a high-power pump source of relatively low brightness. In particular, the DCHOF is compatible with standard high-power fiber-coupled multimode pump sources, which opens up for scaling of the 980-nm power in a cost effective way.…”

Section: Introductionmentioning

confidence: 99%

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Fiber Design For High-Power Low-Cost Yb:Al-Doped Fiber Laser Operating at 980 nm

Kim

Soh

Nilsson

et al. 2007

IEEE J. Select. Topics Quantum Electron.

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Abstract-We investigated an Yb:Al-doped depressed-clad hollow optical fiber (DCHOF) for cladding-pumped 980-nm laser operation. With a careful design, the nonzero fundamental-mode cutoff characteristics of a DCHOF allows the competing 1030-1060 nm emission to be filtered out, despite being quite close to 980 nm. The laser yielded over 3 W of output power in a diffraction limited beam (M 2 ∼ 1.09) from a DCHOF with an innercladding diameter of 120 µm. This is large enough for pumping with standard fiber-coupled multimode diode sources. By reducing the inner-cladding size to 90 µm, and hence, lowering the 980-nm threshold, the output power was scaled up to 7.5 W. However, we believe that the M 2 -parameter degrades to 2.7, as a result of increased cladding-mode lasing, as the cladding thickness is reduced.

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Section: Experiments and Resultscontrasting

confidence: 63%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fiber Design For High-Power Low-Cost Yb:Al-Doped Fiber Laser Operating at 980 nm

Kim

Soh

Nilsson

et al. 2007

IEEE J. Select. Topics Quantum Electron.

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“…There has been a lot of activity in recent years around this theme of research with the development of specific ytterbium-doped fiber lasers [4]- [6] and new semiconductors through sophisticated chip designs [7].…”

Section: Introductionmentioning

confidence: 99%

975-nm single-mode laser source: external coherent combining of two pigtailed laser diodes

2004

IEEE J. Select. Topics Quantum Electron.

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Study on tens-of-Watt all-fiber oscillator operating near 980 nm with commercially-available double-cladding ytterbium-doped fiber

Chen

Cao

et al. 2021

Optik

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A 3.5 W 977 nm Cladding-pumped Jacketed Air-Clad Ytterbium-Doped Fiber Laser

Cited by 32 publications

References 3 publications

Fiber Design For High-Power Low-Cost Yb:Al-Doped Fiber Laser Operating at 980 nm

Fiber Design For High-Power Low-Cost Yb:Al-Doped Fiber Laser Operating at 980 nm

975-nm single-mode laser source: external coherent combining of two pigtailed laser diodes

Study on tens-of-Watt all-fiber oscillator operating near 980 nm with commercially-available double-cladding ytterbium-doped fiber

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