Long-range quasi-non-diffracting Gauss-Bessel beams in a few-cycle laser field.
Opt Express
; 29(7): 10997-11008, 2021 Mar 29.
Article
en En
| MEDLINE
| ID: mdl-33820221
ABSTRACT
Many applications ranging from nonlinear optics to material processing would benefit from pulsed ultrashort (quasi-)non-diffracting Gauss-Bessel beams (GBBs). Here we demonstrate a straightforward yet efficient method for generating such zeroth- and first-order GBBs using a single reflective spatial light modulator. Even in the sub-8-fs range there are no noticeable consequences for the measured pulse duration. The only effect is a weak "coloring" of the outer-lying satellite rings of the beams due to the spectrum spanning over more than 300 nm. The obtained beams have diffraction half-angles below 40 µrad and reach propagation distances in excess of 1.5 m.
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01-internacional
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MEDLINE
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En
Revista:
Opt Express
Asunto de la revista:
OFTALMOLOGIA
Año:
2021
Tipo del documento:
Article