Abstract
We study exciton-polariton nonlinear optical fluids in the high momentum waveguide regime for the first time. We demonstrate the formation of dark solitons with the expected dependence of width on fluid density for both main classes of soliton-forming fluid defects. The results are well described by numerical modeling of the fluid propagation. We deduce a continuous wave nonlinearity more than ten times that on picosecond time scales, arising due to interaction with the exciton reservoir.
Highlights
We study exciton-polariton nonlinear optical fluids in the high momentum waveguide regime for the first time
We demonstrate the formation of dark solitons with the expected dependence of width on fluid density for both main classes of soliton-forming fluid defects
The envelope of the optical field evolves slowly compared to the wavelength 2π=β, which leads to its evolution equation becoming formally analagous to the nonlinear Schrodinger (NSE) or GrossPitaevskii (GPE) equations, but with z playing the role of time [4]
Summary
The envelope of the optical field evolves slowly compared to the wavelength 2π=β, which leads to its evolution equation becoming formally analagous to the nonlinear Schrodinger (NSE) or GrossPitaevskii (GPE) equations, but with z playing the role of time [4] This high-momentum paraxial regime has been exploited for photonic simulation of complex Hamiltonians [5,6,7,8,9]. In this work we experimentally study spatial dark polariton soliton formation in the high-momentum regime for the first time. Compared to microcavities our waveguide is effectively one dimensional in the coordinate, x, transverse to the fluid
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