Laser

Details Laser Laser

2006-07-27

2009-10-20

Nguyen, Dung T (Department: 2828)

Coherent light generators

Particular pumping means

Pumping with optical or radiant energy

C372S072000, C372S038060

Reexamination Certificate

active

07606283

ABSTRACT:
A laser device and a method of pumping a laser gain medium (R) comprise directing pulses of laser light from a pump laser (10) to a series of separate locations (11, 12, 13, 14, 15, 16and17) arranged longitudinally along the gain medium (R) in the direction of laser propagation. Each pulse of laser light generates a population inversion in an associated portion of the gain medium (R) just ahead of the laser photons. The pulses from the pump laser (10) are transmitted by a splitter (18) to the series of separate locations by optical delay lines (11, 12, 13, 14, 15, 16and17) and each delay line is arranged to pump a different portion of the gain medium to cause a localised population inversion. The pulse transmission delays deliver a sequence of pulses to the portions of the gain medium (R) such that each portion will in turn contribute to amplification of a laser propagating within the gain medium (R).

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