THz Time-Domain Characterization Of Amplifying Quantum-Cascade MetasurfacePaper (OPTO2)
Wed, 11 Nov 2020 12:30am to 12:45am
We present direct measurements using reflection-mode terahertz (THz) time domain spectroscopy (TDS) of amplifying quantum-cascade (QC) metasurfaces used in THz QC-VECSELs. Devices resonant at 2.2 and 2.5 THz are studied under different bias currents, and exhibit gain-induced partial compensation of losses.
Authors: Shen, Yue; Kim, Anthony; Curwen, Chris; Reno, John; Williams, Benjamin
Sandia National Laboratories, UCLA