Gigahertz planar photoconducting antenna activated by picosecond optical pulses.

PAPER pubmed Optics letters 1995 Engineering / measurement Effect: unclear Evidence: Insufficient

Read original paper → DOI: 10.1364/ol.20.001544 PMID: 19862077 Evidence Lab

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

At a glance

Study type

Engineering / measurement

Effect direction

unclear

Population

—

Sample size

—

Exposure

microwave other · 50-ps optical pulses (activation); generated 1–20-GHz microwave pulses

Evidence strength

Insufficient

Confidence: 74% · Peer-reviewed: yes

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": 0.7399999999999999911182158029987476766109466552734375,
    "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": []
}

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AI-extracted fields are generated from the abstract/metadata and may be incomplete or incorrect. This content is for informational purposes only and is not medical advice.

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