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- W1569291166 abstract "Low-fill-factor laser bars composed of five narrow-stripe broad-area lasers (30 $mu text{m} ,, times ,, 6000~mu text{m}$ ) with monolithic spectral stabilization are presented. Each laser on the bar emits at a unique wavelength from 970 to 980 nm with a channel spacing of 2.5 nm. Narrow spectral line width $kappa text{L}~sim $ 0.2, which is shown to be sufficient to suppress lasing in Fabry-Perot modes for narrow line operation across all wavelength channels. However, additional optical scattering losses of the gratings are found to limit output power and efficiency. The final realized minibars deliver 25-W continuous wave output power with a conversion efficiency >40% and operate with a beam parameter product of $sim 1.6$ mm mrad per single emitter, twofold improved in comparison with typical 90- $mu text{m}$ wide broad area laser. Such laser minibars are an attractive source for brilliant dense spectral beam combining." @default.
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- W1569291166 date "2015-08-01" @default.
- W1569291166 modified "2023-09-25" @default.
- W1569291166 title "25-W Monolithic Spectrally Stabilized 975-nm Minibars for Dense Spectral Beam Combining" @default.
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- W1569291166 doi "https://doi.org/10.1109/lpt.2015.2435251" @default.
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