multiphoton absorption

multiphoton absorption

[¦məl·tə¦fō‚tän ab′sȯrp·shən]
(atomic physics)
The excitation of an atom or other microscopic system to a higher quantum state by simultaneous absorption of two or more photons which together provide the necessary energy.
References in periodicals archive ?
In this material, recording is done by changing the isomer distribution through multiphoton absorption.

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