Effects of off-axis laser beam propagation on beam parameters

Off-axis Gaussian beam propagation through ABCD optical systems is analyzed using a relation between beam moments of irradiance in off-axis and on-axis propagation, respectively. Analytical expressions to link off-axis and on-axis Gaussian beam propagation parameters (for instance squared beam radius, Kurtosis and Skewness parameters) are obtained. It is shown that off-axis propagation causes an increase of beam waist radius, a decrease of beam symmetry and it may flat beam profile.

[1]  J. A. Ramos-de-Campos,et al.  Propagation of polychromatic Gaussian beams through thin lenses. , 2001, Journal of the Optical Society of America. A, Optics, image science, and vision.

[2]  A. Yoshida,et al.  Diffraction patterns of off-axis gaussian beams in the optical system with astigmatism and coma , 1978 .

[3]  O. Mendoza-Yero,et al.  Incoherent superposition of off-axis polychromatic Hermite-Gaussian modes. , 2002, Journal of the Optical Society of America. A, Optics, image science, and vision.

[4]  Cronin,et al.  High-aperture diffraction of a scalar, off-axis Gaussian beam , 2000, Journal of the Optical Society of America. A, Optics, image science, and vision.

[5]  Gemma María Piquero Sanz,et al.  On the propagation of the kurtosis parameter of general beams , 1995 .

[6]  B. Lü,et al.  Beam combination of a radial laser array: Hermite-Gaussian model , 2000 .

[7]  B. Lü,et al.  Beam combination of a linear array: Hermite-Gaussian superposition model , 2001 .

[8]  P. Hello,et al.  Simulation of beam propagation in off-axis optical systems , 1996 .

[9]  B. Lü,et al.  Coherent and incoherent combinations of off-axis Gaussian beams with rectangular symmetry , 1999 .

[10]  A. Yoshida,et al.  Effect of aberrations on off-axis gaussian beams , 1975 .

[11]  A. Yoshida,et al.  Diffraction patterns of off-axis gaussian beams in the presence of third-order spherical aberration in the optical system , 1976 .

[12]  H. Kong,et al.  Characteristics of coherent and incoherent off-axis elegant Hermite–Gaussian beam combinations , 2003 .