Imaging a laser pulse propagation trough an image acquisition system

  • Authors:

  • Toadere Florin;Nikos E. Mastorakis

  • Affiliations:

  • INCDTIM Cluj Napoca, Cluj Napoca, Romania and WSEAS Research Department, Zografou, Athens, Greece;INCDTIM Cluj Napoca, Cluj Napoca, Romania and WSEAS Research Department, Zografou, Athens, Greece

  • Venue:
  • CSECS'09 Proceedings of the 8th WSEAS International Conference on Circuits, systems, electronics, control & signal processing
  • Year:
  • 2009

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Abstract

The goal of this paper is to generate a laser pulse and to capture it by an image acquisition system. We use a confocal resonator to generate a laser pulse; then the generate light is focused in to an optical fiber using an achromatic doublet; the light propagates through the fiber and at the fiber output light is projected on a CMOS sensor. We use the PSF (point spread function) and MTF (modulation transfer function) to characterize the functionality of the achromatic doublet and the optical part of a CMOS sensor. We analyze the CMOS electrical part considering the photon shot noise and the FPN (fixed pattern noise). Finally, we use a Lapacian filter, an amplitude filter and a bilateral filter in order to reconstruct the noisy blurred image. We consider the image capture system to be linear shift invariant, axial and the light is orthogonal to the system.