Dataset Information


Extreme nonlinear strong-field photoemission from carbon nanotubes.

ABSTRACT: Strong-field photoemission produces attosecond (10-18 s) electron pulses that are synchronized to the waveform of the incident light. This nonlinear photoemission lies at the heart of current attosecond technologies. Here we report a new nonlinear photoemission behaviour-the nonlinearity in strong-field regime sharply increases (approaching 40th power-law scaling), making use of sub-nanometric carbon nanotubes and 800 nm pulses. As a result, the carrier-envelope phase sensitive photoemission current shows a greatly improved modulation depth of up to 100% (with a total modulation current up to 2 nA). The calculations reveal that the behaviour is an interplay of valence band optical-field emission with charge interaction, and the nonlinear dynamics can be tunable by changing the bandgap of carbon nanotubes. The extreme nonlinear photoemission offers a new means of producing extreme temporal-spatial resolved electron pulses, and provides a new design philosophy for attosecond electronics and photonics.

PROVIDER: S-EPMC6814826 | BioStudies | 2019-01-01

REPOSITORIES: biostudies

Similar Datasets

2013-01-01 | S-EPMC3826624 | BioStudies
2015-01-01 | S-EPMC4557130 | BioStudies
| S-EPMC5805726 | BioStudies
2015-01-01 | S-EPMC4290083 | BioStudies
| S-EPMC8184802 | BioStudies
| S-EPMC5661747 | BioStudies
2018-01-01 | S-EPMC6255866 | BioStudies
2014-01-01 | S-EPMC3929802 | BioStudies
2013-01-01 | S-EPMC3593216 | BioStudies
2014-01-01 | S-EPMC3942697 | BioStudies