Ultra-broadband Femtosecond Ghost Imaging by exploiting coherence-tailored semiconductor-based light sources: basics and applications

该提案的目标是利用半导体基超发光二极管发射的基于超宽带放大自发发射（ASE）的光首次实验实现鬼影成像。我们利用其一阶和二阶相干性（即在场和强度上）的独特特性，可以最佳地定制，最终实现真正的热光源，即同时具有一阶和二阶非相干性的光源。该源的鬼影成像应用需要在飞秒相关时间尺度上采用新的超快探测技术。这些探测技术的实现和表征以及发射器相干特性的研究是应用的中心。为了在分辨率和极限方面与传统成像方法相比较，充分探索和衡量已实现的鬼成像的潜力，需要对鬼成像特性进行全面的表征。我们期望这种基于成熟和复杂的光电半导体发射器的飞秒相关时间的超宽带鬼影成像将导致实现具有改进的新成像性能的现实世界应用，最后在提案中通过三个精心选择的应用实例进行演示。因此，该提案代表了利用ASE半导体源的量子光学基础研究，包括其广泛的应用领域。

The proposal targets on the first experimental realization of ghost imaging by ultra-broadband amplified spontaneous emission (ASE) based light, emitted by semiconductor-based superluminescent diodes. We exploit the unique property that its first and second order coherence (i.e in field and intensity) can be optimally tailored to achieve finally a true thermal light source, i.e. a source being simultaneously incoherent in first and second order. The ghost imaging application of this source requires novel ultrafast detection techniques on femtosecond correlation timescales adopted to this broad spectrum. The realization and characterisation of these detection techniques and the investigations of the coherence properties of the emitters are in the centre of the application. Comprehensive characterizations of the ghost imaging properties are needed in order to fully explore the understanding and measure the potential of the realized ghost imaging against classical imaging procedures with respect to resolution and limits. We expect that this ultra-broadband ghost imaging on femtosecond correlation times based on mature and sophisticated optoelectronic semiconductor emitters will lead to the realization of real world applications with improved novel imaging performances which demonstration is finally intended within the proposal by three well-selected application examples. Thus the proposal represents quantum optics basic research investigations exploiting an ASE semiconductor source including their wide-spread field of applications.