2007
DOI: 10.1109/jstqe.2007.896628
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Fiber Design For High-Power Low-Cost Yb:Al-Doped Fiber Laser Operating at 980 nm

Abstract: 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… Show more

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Cited by 16 publications
(5 citation statements)
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“…Aluminum oxide (Al 2 O 3 ) is a ubiquitous laser material utilized both in its crystalline form and as a component in glass laser systems . In the latter case, early interest stemmed from the apparent ability of alumina to “dissolve” clusters of otherwise insoluble rare earth dopants into the silica (SiO 2 ) network .…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Aluminum oxide (Al 2 O 3 ) is a ubiquitous laser material utilized both in its crystalline form and as a component in glass laser systems . In the latter case, early interest stemmed from the apparent ability of alumina to “dissolve” clusters of otherwise insoluble rare earth dopants into the silica (SiO 2 ) network .…”
Section: Introductionmentioning
confidence: 99%
“…Aluminum oxide (Al 2 O 3 ) is a ubiquitous laser material utilized both in its crystalline form 1 and as a component in glass laser systems. [2][3][4][5][6][7][8] In the latter case, early interest stemmed from the apparent ability of alumina to "dissolve" clusters of otherwise insoluble rare earth dopants into the silica (SiO 2 ) network. 2 This solubilizing quality of alumina in silica increased the active dopant concentration prior to the on-set of deleterious concentration quenching.…”
Section: Introductionmentioning
confidence: 99%
“…With the development of infrared diode lasers for optical pumping, the preparation of Yb 3+ -doped laser media became a matter of major interest in the current solid-state laser technology, especially for high power applications in diode-pumped thin disk, waveguide, and fiber design configurations. Main reasons sustaining this interest are the availability of affordable and high-power InGaAs diode lasers emitting at 980 nm, where Yb 3+ has rather high optical absorption, and the small quantum defect characteristic for the absorption and emission processes associated to the 4f electronic configuration of Yb 3+ , which minimizes the heat transfer to the host.…”
Section: Introductionmentioning
confidence: 99%
“…35 Figure 1 shows the z-scan traces obtained for some selected NaTX crystals in σ and π polarizations. For the theoretical fits shown as solid lines, a Gaussian beam profile and pulse shape have been assumed, and Equations (3)(4)(5) have been used to calculate theoretical traces and to extract nonlinear indices. Table 1 collects the n 2 values, positive in all cases, obtained for disordered NaTX crystals for σ and π polarizations.…”
Section: Resultsmentioning
confidence: 99%