Symmetry-breaking instability of multimode vector solitons

Area of Science:

• Nonlinear Optics
• Photonics
• Waveguide Optics

Background:

• Spatial optical vector solitons are self-guided laser beams composed of multiple spatial modes.
• Kerr media exhibit intensity-dependent refractive indices, crucial for nonlinear optical phenomena.
• Symmetry-breaking instabilities can alter the propagation dynamics of optical solitons.

Purpose of the Study:

• To experimentally investigate the symmetry-breaking instability of two-component multimode spatial optical vector solitons.
• To characterize the onset and nature of this instability in a nonlinear waveguide.
• To utilize orthogonal circular polarization states as the soliton components.

Main Methods:

• Experimental setup utilizing a CS2 planar waveguide.
• Generation and propagation of two-component spatial optical vector solitons.
• Observation of beam dynamics using optical imaging and characterization techniques.

Main Results:

• Demonstrated a sharp space-inversion symmetry-breaking instability in the vector soliton.
• Observed the instability in Kerr media (CS2 planar waveguide).
• Confirmed the role of orthogonal circular polarization states in the soliton dynamics.

Conclusions:

• Two-component spatial optical vector solitons are susceptible to symmetry-breaking instabilities in Kerr media.
• The experimental results provide crucial insights into the fundamental physics of nonlinear light propagation.
• This finding has implications for controlling and designing optical beam propagation in nonlinear systems.