| Autor: |
Liu, Yangyang, Beetar, John E., Nesper, Jonathan, Gholam-Mirzaei, Shima, Chini, Michael |
| Zdroj: |
Nature Photonics; Feb2022, Vol. 16 Issue 2, p109-112, 4p |
| Abstrakt: |
The measurement of transient optical fields has proven critical to understanding the dynamical mechanisms underlying ultrafast physical and chemical phenomena, and is key to realizing higher speeds in electronics and telecommunications. However, complete characterization of optical waveforms requires an 'optical oscilloscope' capable of resolving the electric-field oscillations with sub-femtosecond resolution and with single-shot operation. Here we show that strong-field nonlinear excitation of photocurrents in a silicon-based image sensor chip can provide the sub-cycle optical gate necessary to characterize carrier-envelope phase-stable optical waveforms in the mid-infrared. By mapping the temporal delay between an intense excitation and weak perturbing pulse onto a transverse spatial coordinate of the image sensor, we show that the technique allows single-shot measurement of few-cycle waveforms. Waveforms of mid-infrared few-cycle optical pulses are captured in a single shot by measuring nonlinear photocurrents in a Si-based image sensor chip. The temporal resolution of waveforms is determined by the spatial resolution of the image sensor. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
Full text from SpringerLink