Ontology highlight
ABSTRACT:
SUBMITTER: Xiao Y
PROVIDER: S-EPMC6548774 | biostudies-literature | 2019
REPOSITORIES: biostudies-literature
Light, science & applications 20190605
We demonstrate the generation of nanosecond mid-infrared pulses via fast modulation of thermal emissivity enabled by the absorption of visible pump pulses in unpatterned silicon and gallium arsenide. The free-carrier dynamics in these materials result in nanosecond-scale modulation of thermal emissivity, which leads to nanosecond pulsed thermal emission. To our knowledge, the nanosecond thermal-emissivity modulation in this work is three orders of magnitude faster than what has been previously d ...[more]