US PATENT SUBCLASS 359 / 134
.~.~.~.~ With pump

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

109  DF  OPTICAL COMMUNICATION {13}
115  DF  .~ Multiplex {7}
124  DF  .~.~ Wavelength division/frequency division (includes scattering, e.g., Raman, Brillouin, etc.) {4}
133  DF  .~.~.~ Different sources {1}
134.~.~.~.~ With pump

DEFINITION

Classification: 359/134

With pump:

(under subclass 133) Subject matter wherein the atoms, in at least one of the sources of a medium, are caused to be raised from certain lower to certain higher energy levels to cause population inversion between certain intermediate levels in order to ultimately produce photons when the energy level moves from higher to lower levels.

SEE OR SEARCH THIS CLASS, SUBCLASS:

160, for pumping in an optical transmitter and receiver system.

345, for a particular pumping type in an optical amplifier.

SEE OR SEARCH CLASS

372, Coherent Light Generators,

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