Nonlinear optical absorption and photocurrents in topological insulators

Volume: 105, Issue: 11
Published: Mar 28, 2022
Abstract
Theory of optical absorption of linearly and circularly polarized light in surface and edge states in topological insulators is developed for a nonlinear light intensity regime. The absorbance for surface states and the absorption width for the edge states both decrease as 1/\sqrt{I}at high light intensity I Elastic scattering of the photoexcited electrons and holes is taken into account. The absorption bleaching at high intensity is shown...
Paper Details
Title
Nonlinear optical absorption and photocurrents in topological insulators
Published Date
Mar 28, 2022
Volume
105
Issue
11
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