On measurements of the time characteristics of radiation,which are based on multiphonon processes in oppositely traveling light beams

The connection between the time characteristics of laser radiation and the characteristics of the multiphoton luminescence track in the presence of errors in track measurement is discussed. Estimates of the measurement accuracy required to record ultrashort pulses are obtained. The advantages of the scheme using two vessels are considered; these advantages turn out to be more significant as the photon factor increases.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 15, No. 2, pp. 227–232, February, 1972.