Figure eight shaped coherent optical pulse source

Details Figure eight shaped coherent optical pulse source Figure eight shaped coherent optical pulse source

1990-11-05

1991-09-17

Sikes, William L.

Coherent light generators

Particular resonant cavity

Folded cavity

372 6, 372 25, 372106, 372703, 385 27, 385 32, 385141, H01S 3083

Patent

active

050501836

ABSTRACT:
An optical pulse source for producing short optical pulses comprises first and second optical loops coupled together by a beam splitter so as to define a figure eight optical path in which a light beam propagating toward the beam splitter in one of the first and second loops is split by the beam splitter to form two light beams propagating in opposite directions around the other of the first and second loops. The first loop includes a direction dependent loss element for reducing the intensity of light propagating in a predetermined direction around the first loop, and the second loop includes an element having an intensity dependent nonlinear optical transmission characteristic. One of the first and second loops includes an optical gain medium. Coupling apparatus is also provided for coupling pump light into the loop including the gain medium and for coupling optical pulses out of the source.

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