Femtosecond kHz laser/amplifier system with optical parametric amplifier (OPA), pumped through the main unit and usable only through this.

带有光学参量放大器 (OPA) 的飞秒 kHz 激光/放大器系统，通过主单元泵浦，并且只能通过主单元使用。

• 批准号: 437059640
• 金额: --
• 依托单位: Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau
• 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/437059640?language=en
• 关键词: Femtosecond; kHz; laser; amplifier; system

The research of the working group "Ultrafast spectroscopy and biophysics" lies in the field of fast and ultrafast molecular dynamics in condensed phase. We are particularly interested in reactive and non-reactive photoinduced processes in biologically relevant molecules and corresponding model systems, as well as in metal-ligand complexes. The understanding of the competing deactivation processes of a matrix-bound chromophore on the pico- and sub-picosecond time scale after electronic excitation on the molecular level is the basis for the use of the reaction and process mechanisms based on this for applications e.g. in biological-medical (fluorescence markers, optogenetics) and in technical fields (catalysis, luminescence, magnetism).Ultrafast methods of "pump/probe" laser spectroscopy are applied and further developed in order to investigate the light-induced primary processes with high time-resolution into the femtosecond time-range. These include time-resolved absorption spectroscopy in the visible and adjacent spectral ranges for recording electronic dynamics, time-resolved absorption spectroscopy in the mid-infrared for recording ultrafast vibrational and structural dynamics and time-resolved reflectivity spectroscopy in the visible spectral range for describing electronic dynamics in solid samples. As a complementary method, the mentioned infrared spectroscopy is indispensable. Therefore, the object of this application is the procurement of a femtosecond kilohertz laser/amplifier system with an optical parametric amplifier as a replacement for an old device. The total time required to obtain usable measurement results has now increased by a factor of about 2-5 and is absolutely no longer justifiable. The device no longer corresponds in any way to the current standard of apparatus technology with which internationally competitive scientific results could be achieved. One of the consequences of this is that our infrared-spectroscopic measurements within the framework of the DFG Collaborative Research Centre, DFG Research Grant and Research Centre of the State of Rhineland-Palatinate can currently no longer be carried out with the desired and required intensity. The ongoing and planned scientific projects of the working group require excitation pulses that can be tuned to a wide spectral range (ultraviolet - near infrared), with sufficiently large pulse energy, especially in the ultraviolet range. Therefore, an optical parametric amplifier is proposed for the femtosecond kilohertz laser/amplifier system, which is pumped through the amplifier system and can only be used through it.

工作组“超快光谱和生物物理学”的研究在于冷凝期的快速和超快分子动力学领域。我们对生物学相关分子和相应模型系统以及金属配体复合物中的反应性和非反应性光诱导过程特别感兴趣。在电子激发分子水平上电子兴奋后，对矩阵结合的发色团的竞争失活过程的理解是基于此应用的反应和过程机制的基础。在生物医学（荧光标记，光遗传学）和技术领域（催化，发光，磁性）中。“泵/探针”激光光谱法的硫酸盐方法是应用的，并进一步开发，以研究具有较高时间分辨率的光诱导的原始过程，使aftertime secececond timesececoncond timeSececondimeSceceCecond。这些包括用于记录电子动力学的可见光和邻近光谱范围中的时间分辨吸收光谱，在中红外的时间分辨吸收光谱，用于记录超级振动和结构动力学以及在实体样品中描述电子动力学中的超级振动和结构振动的反射范围。作为一种互补方法，上述红外光谱是必不可少的。因此，此应用程序的对象是使用具有光学参数放大器的飞秒kilohertz激光/放大器系统的采购，以替代旧设备。获得可用测量结果所需的总时间现在增加了约2-5倍，并且绝对不再是合理的。该设备不再以任何方式与当前的设备技术标准相对应，可以通过这些标准来实现国际竞争性的科学结果。结果之一是，我们的红外光谱测量在DFG协作研究中心，DFG研究赠款和莱茵兰 - 帕特林州研究中心的框架内，目前不再可以使用所需的强度和所需的强度进行。工作组的持续和计划的科学项目需要具有足够大的脉冲能量，尤其是在紫外线范围内，需要调整到宽光谱范围（紫外线 - 近红外）。因此，为飞秒kilohertz激光/放大器系统提出了光学参数放大器，该系统通过放大器系统泵送，只能通过它使用。