@inproceedings{KornmesserBraunBeushausen2001, author = {Kornmesser, Christoph and Braun, Alexander and Beushausen, Volker}, title = {Applicability of different fluorescent dyes for 2D temperature measurements in dense sprays using planar laser induced fluorescence}, series = {Proceedings of the 17th Annual Conference on Liquid Atomization and Spray Systems, 02.06.2001, Z{\"u}rich}, booktitle = {Proceedings of the 17th Annual Conference on Liquid Atomization and Spray Systems, 02.06.2001, Z{\"u}rich}, publisher = {ETH Z{\"u}rich}, address = {Z{\"u}rich}, isbn = {3952224413}, pages = {554 -- 559}, year = {2001}, language = {en} } @article{BraunKornmesserBeushausen2005, author = {Braun, Alexander and Kornmesser, Christoph and Beushausen, Volker}, title = {Simultaneous spatial and spectral imaging of lasing droplets}, series = {Journal of the Optical Society of America}, volume = {22}, journal = {Journal of the Optical Society of America}, number = {9}, publisher = {Optical Society of America}, issn = {0030-3941}, doi = {10.1364/josaa.22.001772}, pages = {1772 -- 1779}, year = {2005}, abstract = {We present an experimental technique that allows the simultaneous spatial imaging and spectral analysis of falling droplets that exhibit lasing. Single droplet investigations serve as, among other purposes, a preliminary study for spray and combustion researchers. The described setup provides a valuable tool for the evaluation of microdroplet investigations with laser-spectroscopic techniques that rely on laser-induced fluorescence (LIF) or similar spectroscopical phenomena. The emphasis is that both spatial and spectral information are obtained from single-shot images of a falling droplet. Furthermore, combining spatial imaging and a spatially resolving optical multichannel analyzer makes a pointwise rastering of the droplets spectrum possible. This allows for the (almost) unambiguous determination of sources of influence on the spectrum of these droplets-such as geometrical distortion and lasing, nondissolved tracer lumps, and similar phenomena. Although the focus is on the experimental technique itself, we supplement detailed studies of lasing in falling microdroplets. These results were obtained with the aim of developing a system for measuring temperature distributions in droplets and sprays. In the light of these results the practice of calibrating a droplets spectrum by use of a bulk liquid sample needs to be critically reviewed.}, language = {en} }