Airborne four channel fiber coupled vector laser Doppler anemometer system.

Using an airborne vector laser Doppler anemometer (LDA) to measure the air flow outside of the boundary layer of an airplane is a promising optical technique. Measurement of the primary flight data like true airspeed, the angle of attack, and the angle of sideslip can be directly derived from the measured wind vector. We developed an experimental system with interchangeable telescopes to study the change in the LDA sensitivity and signal rate, depending on the focusing of the measurement beam.

Towards the targeted assessment of relevant problems: Optimization of the distress Thermometer for adult neuro-oncological patients.

Objective: Generic psychosocial screening tools may not reflect the unique symptom profile of brain tumour patients (BTPs). The aim was to adapt the problem list of the distress thermometer (DT) for BTPs.

Methods: First, items of low relevance for BTPs were identified on basis of retrospective analyses.

Demonstration of an iron fluorescence lidar operating at 372 nm wavelength using a newly-developed Nd:YAG laser.

We report on the development of a pulsed neodymium-doped yttrium aluminum garnet (Nd:YAG) laser operating at a 1116 nm wavelength. Because the third harmonic is within a few gigahertz of the 372 nm absorption line of iron, this laser system represents an alternative to alexandrite lasers commonly used in iron fluorescence lidars. With our prototype, we achieved a 0.