4 May 2010 High-brightness 975-nm surface-emitting distributed feedback laser and arrays
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Abstract
Over the past few decades, diode laser technology development has achieved remarkable improvement in power, reliability and efficiency. Spectral brightness, wavelength-stabilization and spatial brightness are becoming very important for pumping of novel solid-state gain media and fiber lasers especially for efficient and power-hungry industrial and military applications. We will discuss the benefits of using 975 nm narrow-band curved grating Surfaceemitting Distributed Feedback lasers for pumping fiber lasers and thin disk lasers. SE-DFB lasers with less than 0.25 nm emission bandwidth, 0.07nm/°C thermal wavelength drift with over 50% power conversion efficiency has been achieved with a single emitter producing 73 W of CW power. Two-dimensional arrays of these lasers have been made for power scaling to achieve 1kW of power with less than 1nm spectral bandwidth. We will discuss the results and key advantages of using spectrally and spatially bright diodes for pumping fiber and thin disk lasers.
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M. Kanskar, M. Kanskar, J. Cai, J. Cai, D. Kedlaya, D. Kedlaya, D. Olson, D. Olson, Y. Xiao, Y. Xiao, T. Klos, T. Klos, M. Martin, M. Martin, C. Galstad, C. Galstad, S. H. Macomber, S. H. Macomber, } "High-brightness 975-nm surface-emitting distributed feedback laser and arrays", Proc. SPIE 7686, Laser Technology for Defense and Security VI, 76860J (4 May 2010); doi: 10.1117/12.853037; https://doi.org/10.1117/12.853037
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