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Opt Lett. 1983 Jun 01;8(6):319-21. doi: 10.1364/ol.8.000319.

Single-mode operation of Doppler-broadened lasers by injection locking.

Optics letters

R W Dunn, S T Hendow, W W Chow, J G Small

PMID: 19718100 DOI: 10.1364/ol.8.000319

Abstract

A multimode He-Ne laser can be forced to oscillate in a single mode by injecting a narrow-band signal into the resonator. We show experimentally that the minimum injected intensity required for single-mode operation occurs at an injection frequency detuned from line center. This is in agreement with the results from a semiclassical theory of an inhomogeneously broadened injection-locked laser.

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