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9 February 2007 Nonlinear effects in the propagation of short laser pulses in air
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Non linear propagation of ultra short pulses in air is studied. By preparing an initial field distribution by an amplitude mask we can obtain a Townes soliton[1] (self similar channel of coherent radiation) in air. Experimental observation can be described accurately by the numerical integration of the Non Linear Schroedinger Equation (NLSE) and allow us to explain the origin of the remarkable stability of this soliton as a balance between diffraction and Kerr effect. We further explore on the role of coherence by revisiting the two slit Young's experiment but now in the non linear regime.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Camilo Ruiz, J. San Román, I. Sola, C. Méndez, J. A. Perez, D. Delgado, V. H. Diaz, L. Plaja, I. Arias, and L. Roso "Nonlinear effects in the propagation of short laser pulses in air", Proc. SPIE 6483, Complex Light and Optical Forces, 64830G (9 February 2007);

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