| 2 | 400 μm stripe lasers for high-power fiber coupled pump modules显示文摘We present a 940 nm quasi-continuous wave semiconductor laser designed as a building block for high-power fiber coupled pump modules.The laser comprises a 400μm narrow-stripe array mounted on an aluminum nitride substrate using hard solder.The chip has been optimized for high optical power and low lateral far-field angles.Two vertical and six lateral structure variations have been investigated to determine the best achievable performance.Operating at 1 ms pulse width and a repetition rate of 10 Hz,the laser device reaches a maximum pulse power of 86 W from a 400μm aperture and more than 62%maximum conversion efficiency.Low lateral far-field angles(95%power enclosed)of11.5 and 13.5,depending on the epitaxial design,enable efficient multimode fiber coupling.The potential for highly reliable applications has been demonstrated. | Ren Platz Gtz Erbert Wolfgang Pittroff Moritz Malchus Klaus Vogel Gnther Trnkle | 2013 | High Power Laser Science and Engineering2013，1，1： | 1 |
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