Observation of photorefractive simultons in lithium niobate.
Spatial and temporal locking of fundamental and second harmonic pulses was realized by means of photorefractive nonlinearity and highly mismatched harmonic generation. Due to the presence of both phase-locked and unlocked second harmonic pulses, a twin simultonic state was observed. Simultonic filamentation occurring at high pumping rates allowed us to determine a relation between the simulton's waist and its intensity.
Fazio
Eugenio
E
Ultrafast Photonics Laboratory, Dipartimento di Energetica and CNISM, Sapienza Università Roma, via Scarpa 16, I-00161 Roma Italy. eugenio.fazio@uniroma1.it
Belardini
Alessandro
A
Alonzo
Massimo
M
Centini
Marco
M
Chauvet
Mathieu
M
Devaux
Fabrice
F
Scalora
Michael
M