Title

Blue and Infrared Stimulated Emission from Alkali Vapors Pumped through Two-photon Absorption

Document Type

Article

Publication Date

10-2010

Abstract

The 5 2D3/2, 5 2D5/2, and 7 2S1/2 states of rubidium and the 7 2D3/2, 7 2D5/2, and 9 2S1/2 states of cesium were populated at low pressure by two photon excitation using a pulsed dye laser. Blue beams from the Rb 6 2P3/2, 1/2–5 2S1/2 and Cs 7 2P3/2, 1/2–6 2S1/2 transitions were observed. In addition, infrared beams were observed arising directly from the pumped 2D states, establishing a collisionless cascade mechanism. Threshold is modest at about 0.3 mJ/pulse or 2×105 W/cm2. Slope efficiencies increase dramatically with alkali concentration and peak at 0.4%, with considerable opportunity for improvement. This versatile system might find applications in both underwater communications and for infrared counter measures.

Comments

The "Link to Full Text" on this page loads the PDF of the chapter, furnished open-access through the Springer Nature SharedIt content-sharing initiative. Published by Springer as a work of the U.S. Federal government. Its text may be subject to foreign copyright protection.

DOI

10.1007/s00340-010-4015-9

Source Publication

Applied Physics B

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