Highly localized discrete quadratic solitons.
We observe highly localized solitons in periodically poled lithium niobate waveguide arrays close to phase matching for second-harmonic generation. With fundamental and second-harmonic input in one channel the response indicates two distinguishable propagation schemes. Depending on the relative phase between the two input waves, a self-trapped beam emerges, resembling closely either the in- or the out-of-phase quadratic eigenmode of a single waveguide. A stable soliton propagates when the input waves are in phase.
Iwanow
Robert
R
Center for Research and Education in Optics and Lasers and Florida Photonics Center of Excellence, College of Optics, University of Central Florida, 4000 Central Florida Boulevard, Orlando, Florida 32816, USA. iwanow@creol.ucf.edu
Stegeman
George I
GI
Schiek
Roland
R
Pertsch
Thomas
T
Lederer
Falk
F
Min
Yoohong
Y
Sohler
Wolfgang
W