A model experiment for stand-off sensing
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Two aspects of the stand-off sensing technique (Kocharovsky et al. Proc. Natl Acad. Sci. 2005, 102, 7806-7811) were demonstrated using a femtosecond laser system and an organic dye. First, three cells of a solution of Rhodamine B dye in ethanol were pumped with a single wavelength. Amplification of the light generated by two-photon absorption occurred when the pulses were overlapped temporally, in a direction opposite to that of the pump laser beam. Second, the dispersion of the dye solution permitted two pulses of different wavelength to overlap at a specified location in the solution. The overlapped pulses generated light as the result of two-photon absorption in both the forward and backward directions, relative to that of the pump laser beam.
author list (cited authors)
O. Ariunbold, G., M. Kash, M., Li, H., A. Sautenkov, V., V. Rostovtsev, Y., R. Welch, G., & O. Scully, M.
complete list of authors
O. Ariunbold, Gombojav||M. Kash, Michael||Li, Hebin||A. Sautenkov, Vladimir||V. Rostovtsev, Yuri||R. Welch, George||O. Scully, Marlan