Controlled shaping of ultrafast electric field transients in the mid-infrared spectral range.

Optics letters · 2000 · Unclear · Insufficient evidence

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UnclearInsufficient evidencePaper 3928

Study snapshot

PublicationOptics letters · 2000

Study typeengineering

Reported directionUnclear

Evidence ratingInsufficient

Abstract

We experimentally demonstrate amplitude and phase shaping of femtosecond mid-infrared pulses in a range centered about 14 mum . Single pulses with a tailored optical phase and phase-locked double pulses are generated by phase-matched difference-frequency mixing in a GaSe crystal of near-infrared pulses shaped with a liquid-crystal modulator. The electric field transients are directly measured by free-space electro-optic sampling, yielding pulse durations of 200-300 fs. Our data are in good agreement with a model that describes phase-matched optical rectification.

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AI evidence extraction

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Study typeengineering

Effect directionunclear

PopulationNot supplied

Sample sizeNot supplied

Exposure200-300 fs

Evidence strengthInsufficientConfidence: 74% · Peer reviewed: yes

Main findings

The authors experimentally demonstrate amplitude and phase shaping of femtosecond mid-infrared pulses centered around 14 µm, generating single pulses with tailored optical phase and phase-locked double pulses using phase-matched difference-frequency mixing in GaSe. Electric field transients were directly measured by free-space electro-optic sampling, yielding 200–300 fs pulse durations, and the data agreed with a model describing phase-matched optical rectification.

Outcomes measured

Amplitude shaping of femtosecond mid-infrared pulses
Phase shaping of femtosecond mid-infrared pulses
Generation of phase-locked double pulses
Direct measurement of electric field transients via free-space electro-optic sampling
Pulse duration (200-300 fs)
Agreement with model of phase-matched optical rectification

View raw extracted JSON

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  "study_type": "engineering",
  "exposure": {
    "band": null,
    "source": null,
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "200-300 fs"
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "Amplitude shaping of femtosecond mid-infrared pulses",
    "Phase shaping of femtosecond mid-infrared pulses",
    "Generation of phase-locked double pulses",
    "Direct measurement of electric field transients via free-space electro-optic sampling",
    "Pulse duration (200-300 fs)",
    "Agreement with model of phase-matched optical rectification"
  ],
  "main_findings": "The authors experimentally demonstrate amplitude and phase shaping of femtosecond mid-infrared pulses centered around 14 µm, generating single pulses with tailored optical phase and phase-locked double pulses using phase-matched difference-frequency mixing in GaSe. Electric field transients were directly measured by free-space electro-optic sampling, yielding 200–300 fs pulse durations, and the data agreed with a model describing phase-matched optical rectification.",
  "effect_direction": "unclear",
  "limitations": [],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "mid-infrared",
    "femtosecond pulses",
    "amplitude shaping",
    "phase shaping",
    "difference-frequency mixing",
    "GaSe crystal",
    "liquid-crystal modulator",
    "electro-optic sampling",
    "optical rectification",
    "electric field transients"
  ],
  "suggested_hubs": []
}

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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.25.001472
PubMed: 18066252

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