Coherent 455nm beam production in cesium vapor
J.T. Schultz, S. Abend, D. D\"oring, J.E. Debs, P.A. Altin, J.D., White, N.P. Robins, and J.D. Close
TL;DR
This paper demonstrates the generation of a coherent 455nm blue beam through frequency up-conversion in cesium vapor using two infrared lasers to induce double excitation and cascade emission.
Contribution
It introduces a novel method for producing a coherent blue beam in the visible spectrum via double excitation and cascade in cesium vapor.
Findings
Successful generation of 455nm blue beam
Coherent and collimated beam observed
Method enables new blue light sources
Abstract
We observe coherent, continuous wave, 455nm blue beam production via frequency up-conversion in cesium vapor. Two infrared lasers induce strong double-excitation in a heated cesium vapor cell, allowing the atoms to undergo a double cascade and produce a coherent, collimated, blue beam co-propagating with the two infrared pump lasers.
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