Correction of longitudinal chromatic aberration of polychromatic Gaussian beams

Luis Marti-Lopez; Omel Mendoza-Yero; Humberto Cabrera-Morales

doi:10.1117/12.437216

14 August 2001 Correction of longitudinal chromatic aberration of polychromatic Gaussian beams

Luis Marti-Lopez, Omel Mendoza-Yero, Humberto Cabrera-Morales

Proceedings Volume 4419, 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications; (2001) https://doi.org/10.1117/12.437216
Event: IV Iberoamerican Meeting of Optics and the VII Latin American Meeting of Optics, Lasers and Their Applications, 2001, Tandil, Argentina

Abstract

Some commercially available lasers emit light beams of large spectral bandwidths. As a consequence, the quasi- monochromatic approximation to the laser beam propagation does not hold well for them. A polychromatic model of the beam propagation has to be sued for a better description of the beam properties. In this paper we study the correction of the longitudinal chromatic aberration of polychromatic laser beams by using a model that regards the beam as a co- axial non-coherent superposition of monochromatic stationary TEM₀₀ beams emitted by a dispersive active resonator. Chromatic aberrations are described by dependencies of the waist position and of the Rayleigh range on wavelength. It is shown that a set of plane-parallel plates placed perpendicularly to the beam allows correcting the longitudinal chromatic aberration. It reduces the beam waist and makes the beam propagation facto to approach to unity. The plates do not change the far-field divergence and the near-field and far-field values of the kurtosis parameter.

Citation Download Citation

Luis Marti-Lopez, Omel Mendoza-Yero, and Humberto Cabrera-Morales "Correction of longitudinal chromatic aberration of polychromatic Gaussian beams", Proc. SPIE 4419, 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications, (14 August 2001); https://doi.org/10.1117/12.437216

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