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Browsing by Subject "Dispersion (waves)"

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Accurate propagation of ultrashort pulses in nonlinear waveguides using propagation models for the analytic signal

Melchert, O.; Morgner, Uwe; Roth, B.; Babushkin, I.; Demircan, A. (Bellingham, WA : SPIE - International Society for Optical Engineering, 2018)

We present a numerical approach for the accurate simulation of the complex propagation dynamics of ultrashort optical pulses in nonlinear waveguides, especially valid for few-cycle pulses. The propagation models are derived ...
Approaches toward optimized laser-induced damage thresholds of dispersive compensating mirrors applying nanolaminates

Willemsen, T.; Brinkmann, M.; Jupé, M.; Gyamfi, M.; Schlichting, S.; Ristau, Detlev (Bellingham, WA : S P I E - International Society for Optical Engineering, 2017)

Ultra-short laser applications require high quality dielectric optics. The natural dispersion of light needs to be matched by dielectric components. However such dispersive components are very challenging for the deposition ...
Effect of anions on dispersion of a kaolinitic soil clay: A combined study of dynamic light scattering and test tube experiments

Nguyen, M.N.; Dultz, Stefan; Tran, T.T.T.; Bui, A.T.K. (Amsterdam : Elsevier, 2013)

Dispersion is an important issue for clay leaching in soils. In this study, effects of various anions (Cl-, SO42-, acetate, oxalate and citrate) on dispersion of a kaolinitic soil clay were determined at different pH values ...
Improved LIDT values for dielectric dispersive compensating mirrors applying ternary composites

Willemsen, Thomas; Schlichting, S.; Gyamfi, M.; Jupé, Marco; Ehlers, H.; Morgner, Uwe; Ristau, Detlev (Bellingham, WA : S P I E - International Society for Optical Engineering, 2016)

The present contribution is addressed to an improved method to fabricate dielectric dispersive compensating mirrors (CMs) with an increased laser induced damage threshold (LIDT) by the use of ternary composite layers. ...
Radar distance measurements in circular waveguides involving intermodal dispersion effects

Denicke, Eckhard; Armbrecht, Gunnar; Rolfes, Ilona (Cambridge : Cambridge University Press, 2010)

This contribution deals with guided radar distance measurements in the field of industrial tank level control. The aim is to achieve a submillimeter gauging accuracy even when conducting the measurement within a highly ...
Regularizing Aperiodic Cycles of Resonant Radiation in Filament Light Bullets

Brée, Carsten; Babushkin, Ihar; Morgner, Uwe; Demircan, Ayhan (American Physical Society, 2017)

We demonstrate an up to now unrecognized and very effective mechanism which prevents filament collapse and allows persistent self-guiding propagation retaining a large portion of the optical energy on axis over unexpected ...
Ventilation and air quality in city blocks using large-eddy simulation-urban planning perspective

Kurppa, Mona; Hellsten, Antti; Auvinen, Mikko; Raasch, Siegfried; Vesala, Timo; Järvi, Leena (Basel : MDPI AG, 2018)

Buildings and vegetation alter the wind and pollutant transport in urban environments. This comparative study investigates the role of orientation and shape of perimeter blocks on the dispersion and ventilation of ...

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Browsing by Subject "Dispersion (waves)"

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