Determination of the laser wavelength by the phenomena of laserexcited population change on the resonant transitional lower level

The laser wavelength resonated on the 605.134nm transition in atomic uranium was determined by means of the phenomena of laser-excited population decrease and emitted minus fluorescence signal on the resonant transitional lower level.By combining the methods in this work with that in Ref.[4],laser wavelengths resonated on the actually existential transitions in all the atoms and ions might be determined accurately and veraciously.