Microaxicons for ultrashort wave packets II - MAXWELL II

在麦克斯韦（用于超短波包的微轴镜）项目的第二阶段，将与IMTEK密切合作开发和研究新型低色散MEMS致动器，用于整形和表征非衍射超短脉冲激光辐射。在目前最成功的方法的基础上，这些组件的参数字段的一个必要的扩展。MBI计划的工作包的重点是时空分析所产生的波包的传播在几个周期的制度和重要的应用。特别是，系统的基础研究将直接对应于这些应用程序的具体新性能的致动器的设计和功能。基本上，这包括快速的实验，（在千赫兹范围内）可操纵压电致动器，特别是（i）利用衍射菲涅耳镜的同时时空聚焦（SSTF），（ii）利用菲涅耳镜的相移自相关，（iii）利用可单独寻址的轴棱锥的自适应2D脉冲持续时间和波前测量，以及慢慢地（在第二尺度上）热可调致动器，如（iv）用小型化螺旋相位板阵列成形脉冲涡旋光束图，以及（vi）利用非对称MEMS镜产生超短脉冲Airy光束和相关类型的波包。该里程碑涵盖了技术和应用基础研究的重要步骤，以及有关工作计划中最重要主题的联合出版物。MBI的所有调查必须与IMTEK所需的技术步骤同步进行。

In the second phase of the project MAXWELL (Microaxicons for ultrashort wavepackets), novel types of low-dispersion MEMS actuators for shaping and characterizing nondiffracting ultrashort-pulsed laser radiation will be developed and studied in close collaboration with IMTEK. On the basis of the currently most successful approaches, an essential extension of the parameter field of such components is intended. The planned working packages of the MBI are focused onto the spatio-temporal analysis of the propagation of the generated wavepackets in few-cycle regime and important applications. In particular, systematic fundamental research will be performed on those applications which directly correspond to the specific mew properties of the actuators in design and functionality. In essential, this comprises experiments with fast (in kilohertz range) steerable piezo-actuators, in particular (i) simultaneous space-time-focusing (SSTF) with diffrative Fresnel mirrors, (ii) phase-shift autocorrelation with Fresnel mirrors, (iii) adaptive 2D-pulse duration and wavefront measurements with individually addressable axicons, as well as experiments with slowly (on second scale) thermally tunable actuators like (iv) the shaping of pulsed vortex beam maps with arrays of miniaturized spiral phase plates, and (vi) the generation of ultrashort-pulsed Airy-beams and related types of wavepackets with asymmetric MEMS-mirrors. The milestone cover significant steps of the technological and applied fundamental research as well as joint publications concerning the most important topics of the working plan. All investigations at MBI have to be performed in synchronization with the required technological steps at IMTEK.