Abstract
The third-order Kerr nonlinear response in gallium phosphide nanoscale waveguides is measured through continuous-wave (CW) four-wave mixing. The extracted nonlinear coefficient ranges from about 800 W−1 m−1 to 1400 W−1 m−1, consistently with an estimated material nonlinearity n2 3.5 × 10−18 W−1 m2. The roles of the residual absorption and the related thermal effects are discussed.
Original language | English |
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Pages (from-to) | 2823-2826 |
Number of pages | 4 |
Journal | Optics Letters |
Volume | 44 |
Issue number | 11 |
DOIs | |
Publication status | Published - 1 Jun 2019 |