A regenerative power amplifier operating on the blue-green line of the nitrogen ion laser
- 1 October 1978
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 33 (7) , 624-626
- https://doi.org/10.1063/1.90484
Abstract
Operation of the nitrogen ion laser as an optical regenerative amplifier driven by a master oscillator allows the output to be effectively switched into the blue‐green region of the spectrum. In this work an amplifier containing a dilute plasma of nitrogen ions was pumped by thermolecular charge transfer from He2+ produced by an intense e‐beam propagating through several atmospheres pressure of gas mixture. The injection of relatively broadband output from a dye laser oscillator caused the output from the amplifier to switch entirely into the (0,2) vibrational component of the B→X electronic transition of N+2 at 470.9 nm. An output linewidth of 0.007 nm was achieved together with the early saturation of the laser transition needed for the extraction of power from the amplifier at optimal efficiency.Keywords
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