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Next Generation Diode Lasers with Enhanced Brightness

机译：具有增强亮度的下一代二极管激光器

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摘要

High-power diode lasers are nowadays well established manufacturing tools in high power materials processing, mainly for tactile welding, surface treatment and cladding applications. Typical beam parameter products (BPP) of such lasers range from 30 to 50 mnrmrad at several kilowatts of output power. TRUMPF offers a product line of diode lasers to its customers ranging from 150 W up to 6 kW of output power. These diode lasers combine high reliability with small footprint and high efficiency. However, up to now these lasers are limited in brightness due to the commonly used spatial and coarse spectral beam combining techniques. Recently diode lasers with enhanced brightness have been presented by use of dense wavelength multiplexing (DWM). In this paper we report on TRUMPF's diode lasers utilizing DWM. We demonstrate a 2 kW and a 4 kW system ideally suited for fine welding and scanner welding applications. The typical laser efficiency is in the range of 50%. The system offers plug and play exchange of the fiber beam delivery cable, multiple optical outputs and integrated cooling in a very compact package. An advanced control system offers flexible integration in any customer's shop floor environment and includes industry 4.0 capabilities (e.g. condition monitoring and predictive maintenance).
机译：如今，大功率二极管激光器已经成为大功率材料加工领域公认的制造工具，主要用于触觉焊接，表面处理和熔覆应用。在几千瓦的输出功率下，此类激光器的典型光束参数乘积（BPP）在30到50毫拉姆之间。通快向其客户提供二极管激光器产品线，输出功率范围从150瓦到6千瓦。这些二极管激光器将高可靠性，小占位面积和高效率结合在一起。然而，由于常用的空间和粗糙光谱光束组合技术，到目前为止，这些激光器的亮度受到限制。最近，已经通过使用密集波长复用（DWM）来提出具有增强的亮度的二极管激光器。在本文中，我们报告了通快使用DWM的二极管激光器。我们展示了2 kW和4 kW系统，非常适合精细焊接和扫描仪焊接应用。典型的激光效率在50％的范围内。该系统以非常紧凑的包装提供光纤束传输电缆的即插即用交换，多个光学输出和集成冷却。先进的控制系统可在任何客户的车间环境中提供灵活的集成，并包括工业4.0功能（例如状态监视和预测性维护）。

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