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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
It is well known that the multiphoton absorption is highly sensitive to the intensity.
Caption: FIGURE 4: The change of multiphoton absorption region in the microrod with pump power increase: (a) low power; (b) higher power; (c) high power.
In CARS microscopy employing near-infrared pulse lasers, the photo-induced damage is dominantly caused by multiphoton induced phenomena, such as multiphoton absorption, oxidation stress, and free-radical generation [11-14].
Merkle and Kitriotis [10] reported that both single and multiple pulse (16 ns at 1064 nm, 10 ns at 532 nm) damage differed very little between 80 K and 295 K, and they compared the temperature dependence with several damage mechanisms, including multiphoton absorption, electron avalanche, inclusion heating, and bond breaking.
In this material, recording is done by changing the isomer distribution through multiphoton absorption.

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