Intensity-correlated spiking infrared and ultraviolet emission from sodium vapors
Alexander Akulshin, Felipe Pedreros Bustos, and Dmitry Budker
TL;DR
This paper investigates the cooperative effects in sodium vapors, revealing intense, correlated infrared and ultraviolet emissions generated through cascade lasing and four-wave mixing, advancing understanding of nonlinear optical processes in atomic vapors.
Contribution
It demonstrates the generation of correlated infrared and ultraviolet emissions from sodium vapors via cascade lasing and four-wave mixing, highlighting a novel cooperative effect.
Findings
High intensity correlation between infrared and ultraviolet emissions.
Observation of cascade mirrorless lasing at 2207 and 2338 nm.
Ultraviolet radiation at 330 nm generated through four-wave mixing.
Abstract
The directional spiking infrared and ultraviolet emission from sodium vapors excited to the 4D5/2 level by a continuous-wave resonant laser pump, that constitute a novel feature of the cooperative effects, has been analyzed. Cascade mirrorless lasing at 2207 and 2338 nm on population-inverted transitions and ultraviolet radiation at 330 nm that is generated due to four-wave mixing process demonstrate a high degree of intensity correlation.
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