Generation of strong short coherent terahertz pulses in Ladder-Lambda and Double-Lambda systems

الأصل · EN

We show that coherently driven atomic or molecular media potentially yield strong controllable short pulses of THz radiation. The method is based on excitation of maximal quantum coherence in a gas medium by optical pulses and coherent scattering of infra-red radiation to produce pulses of THz radiation. The pulses have the energies range from several nJ to μJ and time durations from several fs to ns at room temperature.