Gigahertz planar photoconducting antenna activated by picosecond optical pulses.
← Research streamMicrowave pulses in the 1–20 GHz range were generated by illuminating an Fe-compensated InP wafer with 50-ps optical pulses. Generation was monitored with a 40-GHz sampling oscilloscope, and saturation behavior, waveform evolution, and optical coupling effici…
Study snapshot
Abstract
We have generated 1-20-GHz microwave pulses by illuminating an Fe-compensated InP wafer with 50-ps optical pulses at normal incidence. The process of the generation of microwave radiation was monitored and analyzed directly through a 40-GHz sampling oscilloscope with precision. The saturation properties, the waveform evolution, and the optical coupling efficiency of the gigahertz photoconducting antenna are discussed. The flexibility, compactness, and high-resolution features offered by this technique merit new applications for radar communication as well as for other microwave detecting devices.
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
Microwave pulses in the 1–20 GHz range were generated by illuminating an Fe-compensated InP wafer with 50-ps optical pulses. Generation was monitored with a 40-GHz sampling oscilloscope, and saturation behavior, waveform evolution, and optical coupling efficiency were discussed.
Outcomes measured
- Generation of 1–20 GHz microwave pulses
- Waveform evolution
- Saturation properties
- Optical coupling efficiency
View raw extracted JSON
{
"study_type": "engineering",
"exposure": {
"band": "microwave",
"source": "other",
"frequency_mhz": null,
"sar_wkg": null,
"duration": "50-ps optical pulses (activation); generated 1–20-GHz microwave pulses"
},
"population": null,
"sample_size": null,
"outcomes": [
"Generation of 1–20 GHz microwave pulses",
"Waveform evolution",
"Saturation properties",
"Optical coupling efficiency"
],
"main_findings": "Microwave pulses in the 1–20 GHz range were generated by illuminating an Fe-compensated InP wafer with 50-ps optical pulses. Generation was monitored with a 40-GHz sampling oscilloscope, and saturation behavior, waveform evolution, and optical coupling efficiency were discussed.",
"effect_direction": "unclear",
"limitations": [],
"evidence_strength": "insufficient",
"confidence": 0.74,
"peer_reviewed_likely": "yes",
"keywords": [
"photoconducting antenna",
"InP wafer",
"Fe-compensated InP",
"picosecond optical pulses",
"microwave pulse generation",
"1–20 GHz",
"40-GHz sampling oscilloscope",
"optical coupling efficiency",
"waveform evolution",
"saturation properties"
],
"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.20.001544
PubMed: 19862077