Generation of on-axis optical filaments by means of Dammann lenses

1. Pérez-Vizcaíno, J.
2. Mendoza-Yero, O.
3. Borrego-Varillas, R.
4. Mínguez-Vega, G.
5. Vázquez de Aldana, J.R.
6. Láncis, J.