منابع مشابه
Regeneration of photon echoes with amplified photon echoes.
Photon-echo-based devices have been proposed for many applications in data storage, image processing, and optical communications. Many of these applications would benefit if the output from the photon-echo process could be used as input in a second photon-echo process. We demonstrate the generation of such secondary echoes, using the amplified output from an initial photon-echo process. The amp...
متن کاملNutational stimulated photon echoes.
Stimulated photon echoes (SPEs) with time duration comparable to the coherent lifetime and Rabi period have been investigated theoretically and experimentally with an angled beam configuration. The Rabi oscillation effects on both the transmitted field (optical nutation) and the SPE fields are explained by analytic solutions of Maxwell-Bloch equations. The theory also predicts that an echo can ...
متن کاملCommentary Protein dynamics and photon echoes
Chemical reactions involve motions along particular coordinates—the reaction coordinate—and very often require that a free energy barrier is surmounted. The motion of solvent molecules with respect to reactants and products provides the energy to surmount the barrier along the reaction coordinate and take away the excess energy of the newly formed product. These same motions also can impede the...
متن کاملNanosecond image processing using stimulated photon echoes.
Processing of two-dimensional images on a nanosecond time scale is demonstrated using the stimulated photon echoes in a rare-earth-doped crystal (0.1 at. % Pr(3+):LaF(3)). Two spatially encoded laser pulses (pictures) resonant with the (3)P(0)-(3)H(4) transition of Pr(3+) were stored by focusing the image pulses sequentially into the Pr(3+):LaF(3) crystal. The stored information is retrieved an...
متن کاملPhoton Echoes in Disordered Semiconductor Quantum Wells
Photon echoes occur when a set of inhomoge-neously broadened transitions are rephased after exci-tation by a series of optical pulses. They are the optical analog to spin echoes developed in nuclear magnetic resonance spectroscopy [1]. The primary uses of pho-ton echoes are in coherent transient signal processing and spectroscopy. Due to the rephasing, photon echo spectroscopy can determine the...
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ژورنال
عنوان ژورنال: Laser Chemistry
سال: 1983
ISSN: 0278-6273,1476-3516
DOI: 10.1155/lc.2.3