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Letters to the editor

Anomalous amplification of a nanosecond pulse in the active medium of a CO₂ laser

V. I. Kovalev

P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow

Abstract: A new effect has been observed experimentally: an increase by a factor of 1.2–1.5 in the unsaturated gain coefficient for a nanosecond pulse in a TEA CO₂ laser amplifier when weak, quasisteady, monochromatic light propagates opposite the pulse. "Weak" here means that the intensity of this light is much lower than that of the light in the nanosecond pulse.

UDC: 621.373.826.038.823

PACS: 42.55.Lt, 42.65.Re, 42.60.Da, 42.60.Lh, 42.60.Jf

Received: 21.04.1993

 English version: Quantum Electronics, 1993, 23:6, 451–452

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