Ground penetrating radar (GPR) is a nondestructive sensor technology for detecting underground objects. GPR requires large-aperture antennas to survey a remote location precisely because of the expansion of microwaves. We propose a laser-driven GPR (LGPR) that uses microwave radiation from a laser plasma to achieve remote sensing. LGPR is expected to provide good spatial resolution with a small...

In this paper we present a prototype instrument for remote open-path detection of nitrous oxide. The sensor is based on a 4.53 μm quantum cascade laser and uses the chirped laser dispersion spectroscopy (CLaDS) technique for molecular concentration measurements. To the best of our knowledge this is the first demonstration of open-path laser-based trace-gas detection using a molecular dispersion...

We present a novel, cascaded acceleration scheme for the generation of spectrally controlled ion beams using a laser-based accelerator in a ‘double-stage’ setup. An MeV proton beam produced during a relativistic laser–plasma interaction on a thin foil target is spectrally shaped by a secondary laser–plasma interaction on a separate foil, reliably creating well-separated quasi-monoenergetic feat...

Today more than ever, archeological research is interdisciplinary: environmental sciences, pollen analysis, botany, soil science, and hydrology. In fact, the impacts of human behaviors on environment and environment on human behaviors can be studied through use of remote sensing technology. The use of this important technique gives archaeologists the opportunity to understand these impacts, whi...

Optimisation of LiDAR derived terrain models for river flow modelling G. Mandlburger, C. Hauer, B. Höfle, H. Habersack, and N. Pfeifer Christian Doppler Laboratory “Spatial Data from Laser Scanning and Remote Sensing” at the Institute of Photogrammetry and Remote Sensing, Vienna University of Technology, Gusshausstrasse 27–29, 1040 Vienna, Austria Institute of Water Management, Hydrology and Hy...

We propose a wearable active camera with a laser pointer (WACL) as human interface devices and its application to telecommunication. The WACL has a laser pointer, which is attached to the active camera-head, and it can point laser beam with elevation and panning of the camera-head. In our system, when a worker wears the WACL, a remote instructor can observe around the worker independently of th...

Wavefront sensing technology can directly test the phase distribution of wavefront distortion and has the advantages of simple operation, real-time and large dynamic range. It is widely used in adaptive optics, laser beam quality diagnosis, laser atmospheric communication, optical element and optics system detection, quantitative phase microscope, human eye aberration measurement and other fiel...