High power ultrashort pulsed laser

高功率超短脉冲激光器

• 批准号: 505114286
• 金额: --
• 依托单位: Ruhr-Universität Bochum
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2022
• 资助国家: 德国
• 起止时间: 2021-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/505114286?language=en
• 关键词: power; ultrashort; pulsed; laser

High power and high repetition rate ultrashort pulsed lasers (>30W, MHz-pulse frequency) enable a unique interaction between the laser pulse and any kind of matter which is not achievable by any other technology. The use of these lasers allows the combination of the high spatial and temporal precision with superior process speed and throughput. By the choice of optimal process parameters and appropriate environmental conditions both processes with minimal thermal impact like precise microcutting and thermally activated processes for e.g. the conversion of ultrathin 2D materials can be realized by these laser systems. The new system is planned as a replacement for a defect laser system which has been successfully used over the past decade to develop numerous new phenomena and processes. Due to the variety of research approaches the new laser should also offer a maximum of parameter flexibility. Ideally, the main laser parameters (pulse energy, pulse repetition frequency, pulse duration) can be adjusted during the process according to the required type of interaction. In addition, the possibility to change the laser wavelength by frequency conversion and the offer for pulse burst mode represent further crucial options in order to expand the field of applications.

高功率和高重复频率的超短脉冲激光（> 30 W，MHz脉冲频率）使激光脉冲与任何物质之间的独特相互作用成为可能，这是任何其他技术都无法实现的。这些激光器的使用允许高空间和时间精度与上级处理速度和生产量的组合。通过选择最佳的工艺参数和适当的环境条件，这些激光系统可以实现具有最小热影响的工艺，如精确的微切割和热激活工艺，例如转换二维材料。新系统计划作为一个有缺陷的激光系统的替代品，该系统在过去十年中已成功地用于开发许多新现象和过程。由于研究方法的多样性，新激光器还应提供最大的参数灵活性。理想情况下，主要激光参数（脉冲能量、脉冲重复频率、脉冲持续时间）可以在工艺过程中根据所需的相互作用类型进行调整。此外，通过频率转换改变激光波长的可能性和脉冲群模式的提供代表了进一步的关键选择，以扩大应用领域。