What Materials are Commonly Used in Nonlinear Optics at the Nanoscale?
Several materials exhibit strong NLO properties at the nanoscale. These include:
Metals like gold and silver, which support surface plasmon resonances. Semiconductors such as silicon and gallium arsenide, which have well-defined electronic structures. Dielectrics like lithium niobate and potassium titanyl phosphate, known for their high nonlinear coefficients. Two-dimensional materials such as graphene and transition metal dichalcogenides, which exhibit unique optical properties due to their reduced dimensionality.
