TY - JOUR
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
N2 - 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.
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.
UR - http://www.scopus.com/inward/record.url?scp=17344391704&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.82.5257
DO - 10.1103/PhysRevLett.82.5257
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AN - SCOPUS:17344391704
SN - 0031-9007
VL - 82
SP - 5257
EP - 5260
JO - Physical Review Letters
JF - Physical Review Letters
IS - 26
ER -