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- W2134975563 abstract "Many applications require laser pump sources with high output power (tens to hundreds of Watts) in the smallest spot, with the smallest divergence. Such high-brightness pump sources typically use edge-emitting semiconductor lasers. However, it is also possible to use high-power two-dimensional vertical-cavity surfaceemitting laser (VCSEL) arrays for this purpose. Using a single 976nm 2D VCSEL array chip in an external cavity configuration, combined with a matching micro-lens array, we have demonstrated more than 30W output power from a 50μm/0.22NA fiber, corresponding to a brightness of 10MW/cm<sup>2</sup>.sr. This represents a substantial reduction in module complexity compared to edge-emitter based modules with similar brightness. These novel high-brightness pump sources exhibit some well-known intrinsic VCSEL performance features such as wavelength stability and narrow spectrum. Power and brightness can be scaled up using polarization and spectral combining." @default.
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- W2134975563 date "2010-02-11" @default.
- W2134975563 modified "2023-10-17" @default.
- W2134975563 title "High-brightness pump sources using 2D VCSEL arrays" @default.
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- W2134975563 doi "https://doi.org/10.1117/12.842492" @default.
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