Absorptive loss and band non-parabolicity as a physical origin of large nonlinearity in epsilon-near-zero materials

  title={Absorptive loss and band non-parabolicity as a physical origin of large nonlinearity in epsilon-near-zero materials},
  author={Ray Secondo and Jacob B. Khurgin and Nathaniel Kinsey},
  journal={Optical Materials Express},
For decades, nonlinear optics has been used to control the frequency and propagation of light in unique ways enabling a wide range of applications such as ultrafast lasing, sub-wavelength imaging, and novel sensing methods. Through this, a key thread of research in the field has always been the development of new and improved nonlinear materials to empower these applications. Recently, epsilon-near-zero (ENZ) materials have emerged as a potential platform to enhanced nonlinear interactions… 

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