Observation and Relaxation of the Two-Photon-Excited Trilevel Echo in Sodium Vapor

摘要

A photon echo from the allowed 3D-3P transition in Na vapor is spontaneously emitted after a single pulse one photon excitation of the 3P state is followed by a single pulse two photon excitation of the 3D state. The collisional relaxation cross section of the excited 3D-3P superposition state of Na in Ar in measured. Keywords; Optical coherent transients; Photo echoes; Trilevel echo; Collisional line broadening; Two photon excited state trilevel photon echo; Two photon excitation; Sodium vapor; and Reprints.