We observe the formation of an intense optical wave packet fully localized in all dimensions, i.e., both longitudinally (in time) and in the transverse plane, with an extension of a few tens of fsec and microns, respectively. Our measurements show that the self-trapped wave is an X-shaped light bullet spontaneously generated from a standard laser wave packet via the nonlinear material response (i.e., second-harmonic generation), which extend the soliton concept to a new realm, where the main hump coexists with conical tails which reflect the symmetry of linear dispersion relationship.
Spontaneously generated X-shaped light bullets / P., Di Trapani; G., Valiulis; A., Piskarskas; O., Jedrekiewicz; J., Trull; Conti, Claudio; S., Trillo. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 91:9(2003), p. 093904. [10.1103/physrevlett.91.093904]
Spontaneously generated X-shaped light bullets.
CONTI, CLAUDIO;
2003
Abstract
We observe the formation of an intense optical wave packet fully localized in all dimensions, i.e., both longitudinally (in time) and in the transverse plane, with an extension of a few tens of fsec and microns, respectively. Our measurements show that the self-trapped wave is an X-shaped light bullet spontaneously generated from a standard laser wave packet via the nonlinear material response (i.e., second-harmonic generation), which extend the soliton concept to a new realm, where the main hump coexists with conical tails which reflect the symmetry of linear dispersion relationship.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
