1 - A laser is considered an energy converter because it transforms light energy from optical pumping into light energy

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1 - A laser is considered an energy converter becauseit transforms light energy from optical pumping into light energyfrom laser beam, with an increase in the wavelength of light inthat process.
2 - The spin-orbit interaction becomes more intense withincreasing Z, as there are more electrons producing the localmagnetic field.
3 - Stimulated emission is not usually observed because thedensity of photons in the medium is not sufficient to stimulateemission.
4 - The crystal lattice of a metal can be represented by a3D potential well whose depth is given by the sum of the Fermienergy of the metal and its work function.
5 - Spontaneous atomic transitions have a very defined,which is its half-life. V [ ] F [ ] This means that the atoms ofthe same species take the same time to make transitions between acertain pair of levels.