US PATENT SUBCLASS 359 / 345
.~ Particular pumping type (e.g., electrical, optical, nuclear, magnetic, etc.)


Current as of: June, 1999
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359 /   HD   OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

333  DF  OPTICAL AMPLIFIER {11}
345.~ Particular pumping type (e.g., electrical, optical, nuclear, magnetic, etc.)


DEFINITION

Classification: 359/345

Particular pumping type (e.g., electrical, optical, nuclear, magnetic, etc.):

(under subclass 333) Subject matter wherein a specified type of pumping is used to change the number of atoms or atomic system in a set of energy levels as a result of the absorption of light incident on the material.

(1) Note. This pumping causes the atoms of a medium to be raised from certain lower to certain higher energy levels, and it may cause a population inversion between certain intermediate levels in order to ultimately produce photons when the energy level moves from higher to lower.

SEE OR SEARCH CLASS

372, Coherent Light Generators,

69+, for particular pumping type which is not used for amplification of a light beam input.