High spectral coherence in long-pulse and continuous free-electron laser: Measurements and theoretical limitations

A. Abramovich; M. Canter; A. Gover; J. Sokolowski; Y. M. Yakover; I. Schnitzer; J. Shiloh

doi:10.1103/PhysRevLett.82.5257

High spectral coherence in long-pulse and continuous free-electron laser: Measurements and theoretical limitations

A. Abramovich
, M. Canter
, A. Gover
, J. Sokolowski
, Y. M. Yakover
, I. Schnitzer
, J. Shiloh

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

Single mode operation was exhibited on the Israeli tandem free-electron laser (FEL). This enabled judicious measurements of narrow spectral linewidth, frequency chirp, and relaxation-oscillation effects. Exact 3D simulations of the FEL oscillator showed good agreement with the measurements, and permitted an estimation of the fundamental Schawlow-Towns linewidth limit of the FEL (including “α effect”) as well as technical noise linewidth limits. We estimate that with voltage-controlled stabilization high-power (10 kW) tunable (over 60% bandwidth) quasi-cw coherent [/(Δv/v_)_rms˜10⁻¹⁰] mm-FIR (far infrared) radiation is attainable in the tandem FEL.

Original language	English
Pages (from-to)	5257-5260
Number of pages	4
Journal	Physical Review Letters
Volume	82
Issue number	26
DOIs	https://doi.org/10.1103/PhysRevLett.82.5257
State	Published - 1999
Externally published	Yes

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10.1103/PhysRevLett.82.5257

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title = "High spectral coherence in long-pulse and continuous free-electron laser: Measurements and theoretical limitations",

abstract = "Single mode operation was exhibited on the Israeli tandem free-electron laser (FEL). This enabled judicious measurements of narrow spectral linewidth, frequency chirp, and relaxation-oscillation effects. Exact 3D simulations of the FEL oscillator showed good agreement with the measurements, and permitted an estimation of the fundamental Schawlow-Towns linewidth limit of the FEL (including “α effect”) as well as technical noise linewidth limits. We estimate that with voltage-controlled stabilization high-power (10 kW) tunable (over 60\% bandwidth) quasi-cw coherent [/(Δv/v\_)rms˜10−10] mm-FIR (far infrared) radiation is attainable in the tandem FEL.",

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doi = "10.1103/PhysRevLett.82.5257",

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T1 - High spectral coherence in long-pulse and continuous free-electron laser

T2 - Measurements and theoretical limitations

AU - Abramovich, A.

AU - Canter, M.

AU - Gover, A.

AU - Sokolowski, J.

AU - Yakover, Y. M.

AU - Schnitzer, I.

AU - Shiloh, J.

PY - 1999

Y1 - 1999

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AB - Single mode operation was exhibited on the Israeli tandem free-electron laser (FEL). This enabled judicious measurements of narrow spectral linewidth, frequency chirp, and relaxation-oscillation effects. Exact 3D simulations of the FEL oscillator showed good agreement with the measurements, and permitted an estimation of the fundamental Schawlow-Towns linewidth limit of the FEL (including “α effect”) as well as technical noise linewidth limits. We estimate that with voltage-controlled stabilization high-power (10 kW) tunable (over 60% bandwidth) quasi-cw coherent [/(Δv/v_)rms˜10−10] mm-FIR (far infrared) radiation is attainable in the tandem FEL.

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High spectral coherence in long-pulse and continuous free-electron laser: Measurements and theoretical limitations

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