High power erbium femtosecond fiber laser system with stable carrier envelope phase

具有稳定载波包络相位的高功率铒飞秒光纤激光器系统

• 批准号: 451923501
• 金额: --
• 依托单位: Friedrich-Alexander-Universität Erlangen-Nürnberg
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2020
• 资助国家: 德国
• 起止时间: 2019-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/451923501?language=en
• 关键词: power; erbium; femtosecond; fiber; laser

The laser system applied for here should allow us to further investigate coherent electron dynamics in solids and at nanometer-sharp metal tips. Since the laser system enables a stable carrier-envelope phase, we can study light-field driven processes. We have done this successfully at a central wavelength of 800 nm in the past; the system applied for here has a central wavelength of about 1.5 um, so that the optical cycle time is about a factor of two longer than before. This is of great interest for intra-cycle effects. Among other things, we want to investigate for how long electronic coherence is preserved in low-dimensional solids such as graphene. Furthermore, the wavelength, which is longer by a factor of two, is interesting, since ponderomotive effects become significantly stronger, which we want to exploit in strong field physics at sharp metal needle tips. With this system, we will therefore be able to venture deeply into the field of strong field physics inside and and on the surface of solids and hope to gain completely new fundamental insights which will be of great interest for future light-wave electronics or petahertzelectronics.

这里应用的激光系统应该允许我们进一步研究固体和纳米尖锐金属尖端的相干电子动力学。由于激光系统能够实现稳定的载波包络相位，我们可以研究光场驱动过程。我们过去已经在800 nm的中心波长成功地做到了这一点;这里应用的系统具有约1.5 μ m的中心波长，使得光学周期时间比以前长约两倍。这对周期内效应非常重要。除此之外，我们还想研究电子相干性在低维固体（如石墨烯）中保持多久。此外，波长长了两倍，这是有趣的，因为有质动力效应变得明显更强，我们想在尖锐的金属针尖上利用强场物理。因此，有了这个系统，我们将能够深入探索固体内部和表面的强场物理学领域，并希望获得全新的基本见解，这将对未来的光波电子学或Petahertzelectronics产生极大的兴趣。