the entire lasing process is based on absorption and emission of photons at certain specific wavelengths. The wavelength emitted from the laser is monochromatic, and its linewidth is very narrow.
Thus, the laser can be used for controlled excitation of molecules. Especially useful for this are the tunable lasers, whose wavelength can be precisely tune to excite specific molecule.
Thus, the laser can be used for controlled excitation of molecules. Especially useful for this are the tunable lasers, whose wavelength can be precisely tune to excite specific molecule.
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