Which component provides the energy to excite the laser medium?

Which component provides the energy to excite the laser medium?

• A. It is the outer casing
• B. It measures wavelength
• C. It provides energy to excite the laser medium
• D. It is the detector

Answer: (C)

Pumping energy into the gain medium is what creates the population inversion needed for laser action. The pump source supplies the energy—via electrical power to a diode pump, a flash lamp, or another energy source—that raises atoms or molecules to excited states. This excitation enables stimulated emission to amplify light at the laser’s chosen wavelength. The outer casing is just the housing, not an energy source. A wavelength-measuring device and a detector are used for monitoring and sensing the output, not for exciting the medium.

Pumping energy into the gain medium is what creates the population inversion needed for laser action. The pump source supplies the energy—via electrical power to a diode pump, a flash lamp, or another energy source—that raises atoms or molecules to excited states. This excitation enables stimulated emission to amplify light at the laser’s chosen wavelength. The outer casing is just the housing, not an energy source. A wavelength-measuring device and a detector are used for monitoring and sensing the output, not for exciting the medium.