Vortex-beam-induced lensing of off-resonance probe beam in Rb vapor

Authors
Publication date
1 January 1998
Publisher
'Institute of Electrical and Electronics Engineers (IEEE)'

Abstract

The nonlinear optical effects in an atomic gas with a LG donut beam are investigated. The LG donut beam was produced with a Ti:sapphire laser using a computer-generated hologram. The nonlinear medium was Rb atomic vapor in a cylindrical Pyrex cell 10 cm long and 2.5 cm in diameter, heated to approximately 120 °C. The power of the donut beam at the cell window was 450 mW. By tuning the laser frequency close to the Rb atomic D line at 780.1 nm, resonant enhancement of the nonlinearity are obtained

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