(DURIP) A WIDELY TUNABLE CONTINUOUS-WAVE LASER TO STUDY 2D MATERIAL STRUCTURES
Abstract
Two-dimensional (2D) materials are have potential applications to a broad range of optoelectronic technologies. 2D semiconductors are particularly well suited to these applications because they interact strongly with light, and their nonlinear optical response can be used as the basic building block for all-optical switches and amplifiers. The optical response of 2D semiconductors is dominated by excitons, composed of bound electron-hole pairs. To date, the majority of studies have focused on the nonlinear response of the lower energy A exciton, but 2D semiconductors also hosts a higher energy B exciton which is a result of strong spin-orbit coupling. The B exciton resonance is located in the 500-700 nm spectral range which is difficult to probe with Ti-sapphire laser technologies which operate between 700-1000 nm. The proposed widely tunable continuous-wave laser is an optical parametric oscillator based laser system which operates between 500-700 nm allowing for resonant pumping and probing the B exciton of 2D semiconductors. While the PI has made significant contributions to the study of the A exciton nonlinear response, this new capability will allow for the study of the B exciton in numerous optical and plasmonic structures that have applications to high speed and low energy consumption information processing technologies.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 07, 2023
- Source ID
- FA95502210113
Entities
People
- John R. Schaibley
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Arizona