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首页> 外文会议>High-power diode laser technology and applications XVI >700 W blue fiber-coupled diode-laser emitting at 450 nm
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700 W blue fiber-coupled diode-laser emitting at 450 nm

机译：发射波长为450 nm的700 W蓝色光纤耦合二极管激光器

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A high-power blue laser source was long-awaited for processing materials with low absorption in the near infrared (MR) spectral range like copper or gold. Due to the huge progress of GaN-based semiconductors, the performance of blue diode-lasers has made a major step forward recently. With the availability of unprecedented power levels at cw-operating blue diode-lasers emitting at 450 nm, it was possible to set up a high-power diode-laser in the blue spectral range to address these conventional laser applications and probably beyond that to establish completely new utilizations for lasers. Within the scope of the research project "BlauLas", funded within the German photonic initiative "EFFILAS" by the German Federal Ministry of Education and Research (BMBF), Laserline in cooperation with OSRAM aims to realize a cw fiber-coupled diode-laser exceeding 1 kW blue laser power. In this paper the conceptual design and experimental results of a 700 W blue fiber-coupled diode-laser are presented. Initially a close look had to be taken on the mounting techniques of the semiconductors to serve the requirements of the GaN laser diodes. Early samples were used for extensive long term tests to investigate degradation processes. With first functional laser-modules we set up fiber-coupled laser-systems for further testing. Besides adaption of well-known optical concepts a main task within the development of the laser system was the selection and examination of suitable materials and assembling in order to minimize degradation and reach adequate lifetimes. We realized R&D blue laser-systems with lifetimes above 5,000 h, which enable first application experiments on processing of various materials as well as experiments on conversion to white-light.
机译：人们一直期待使用高功率的蓝色激光源来处理在近红外（MR）光谱范围内吸收率低的材料，例如铜或金。由于GaN基半导体的巨大进步，蓝光二极管激光器的性能最近迈出了重要的一步。由于连续工作的蓝色二极管激光器在450 nm处发射时具有空前的功率水平，因此有可能在蓝色光谱范围内建立一个高功率二极管激光器，以解决这些常规激光器的应用问题，并且可能超越此范围而建立。激光器的全新用途。在由德国联邦教育与研究部（BMBF）资助的德国光子计划“ EFFILAS”资助的“ BlauLas”研究项目的范围内，Laserline与欧司朗合作，旨在实现连续光纤耦合二极管激光超过1 kW的蓝色激光功率。本文介绍了700 W蓝色光纤耦合二极管激光器的概念设计和实验结果。最初，必须仔细研究半导体的安装技术，以满足GaN激光二极管的要求。早期样品用于广泛的长期测试，以研究降解过程。利用第一个功能性的激光模块，我们建立了光纤耦合激光系统以进行进一步测试。除了适应众所周知的光学概念外，激光系统开发中的主要任务是选择和检查合适的材料并进行组装，以最大程度地降低退化并达到足够的使用寿命。我们实现了寿命超过5,000 h的蓝色研发激光系统，从而可以进行各种材料加工的首次应用实验以及转换为白光的实验。

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