Monitoring the ultrafast electric field change at a mid-infrared plasma Bragg mirror.
← Research streamThe time dependence of the electric field of a reflected femtosecond mid-infrared pulse from a plasma Bragg mirror was directly measured using time-resolved cross-correlation spectroscopy. The measurements showed a noninstantaneous response of the Bragg mirro…
Study snapshot
Abstract
The electric field change of a femtosecond mid-infrared (MIR) pulse reflected by a new type of Bragg mirror is directly measured by time-resolved cross-correlation spectroscopy. The refractive-index contrast of the plasma Bragg mirror is achieved by use of different doping levels of only one type of semiconductor material (n(+) -doped GaAs and undoped GaAs). The direct measurement of the time dependence of the electric field of a reflected MIR pulse permits the observation of a noninstantaneous response of a Bragg mirror compared with a metallic surface, which is due to the penetration of the pulse into the multilayer structure.
AI evidence extraction
Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.
Main findings
The time dependence of the electric field of a reflected femtosecond mid-infrared pulse from a plasma Bragg mirror was directly measured using time-resolved cross-correlation spectroscopy. The measurements showed a noninstantaneous response of the Bragg mirror compared with a metallic surface, attributed to pulse penetration into the multilayer structure.
Outcomes measured
- Time dependence of reflected mid-infrared pulse electric field
- Noninstantaneous response of plasma Bragg mirror vs metallic surface
View raw extracted JSON
{
"study_type": "engineering",
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"outcomes": [
"Time dependence of reflected mid-infrared pulse electric field",
"Noninstantaneous response of plasma Bragg mirror vs metallic surface"
],
"main_findings": "The time dependence of the electric field of a reflected femtosecond mid-infrared pulse from a plasma Bragg mirror was directly measured using time-resolved cross-correlation spectroscopy. The measurements showed a noninstantaneous response of the Bragg mirror compared with a metallic surface, attributed to pulse penetration into the multilayer structure.",
"effect_direction": "unclear",
"limitations": [],
"evidence_strength": "insufficient",
"confidence": 0.74,
"peer_reviewed_likely": "yes",
"keywords": [
"mid-infrared",
"femtosecond pulse",
"electric field measurement",
"Bragg mirror",
"plasma Bragg mirror",
"GaAs",
"time-resolved cross-correlation spectroscopy",
"multilayer structure"
],
"suggested_hubs": []
}AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.
Identifiers and source
DOI: 10.1364/ol.26.001618
PubMed: 18049682