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Amir A. Naqwi
Researcher at University of Erlangen-Nuremberg
Publications - 57
Citations - 1115
Amir A. Naqwi is an academic researcher from University of Erlangen-Nuremberg. The author has contributed to research in topics: Doppler effect & Laser. The author has an hindex of 19, co-authored 56 publications receiving 1073 citations. Previous affiliations of Amir A. Naqwi include University of Minnesota & Stanford University.
Papers
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Journal ArticleDOI
Focusing of diode laser beams: a simple mathematical model.
Amir A. Naqwi,Franz Durst +1 more
TL;DR: A simplified mathematical model for the far field of a monomode diode laser is employed for easy but fairly accurate computations of the optical field in the focal region and the results of computations are shown to agree well with the measurements.
Patent
Method and apparatus for generating monodisperse aerosols
TL;DR: In this article, a metal capillary is vibrated by a piezoelectric ceramic at a substantially constant frequency to cause the liquid stream to breakup into droplets that are substantially uniform in size in the gas stream.
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Trajectory Ambiguities in Phase Doppler Systems: Study of a near forward and a near‐backward geometry
TL;DR: In this paper, an extended optical system employing two identical receiving units, located symmetrically about the plane of the laser beams, provides a robust solution to the trajectory ambiguity, which can be used to measure correctly the particle size and the particle location in the measuring volume.
Journal ArticleDOI
Particle trajectory effects in phase Doppler systems: computations and experiments
TL;DR: In this paper, the effects of particle trajectories on phase Doppler measurements were explored numerically using generalized Lorenz-Mie theory and various schemes for elimination of the trajectory effects were examined.
Journal ArticleDOI
Light Scattering Applied to LDA and PDA Measurements. Part 1: Theory and numerical treatments
Amir A. Naqwi,Franz Durst +1 more
TL;DR: In this paper, the authors present a mathematical model for computing the scattered field produced by a spherical particle moving through the region of interference of two crossing laser beams, which is readily applicable to both laser Doppler and phase-Doppler anemometers (PDAs).