Abstract
We demonstrate here the significant effect relative phase fluctuations have on seeded second harmonic generation (SHG) in optical fibers. A changing relative phase between IR (1.06 μm) and green (0.532 μm) seeding beams results in a continuous washing-out of the χ(2) grating. Consequently only a weak SH signal is observed immediately after seeding. A stable relative phase on the other hand increases the seeded second harmonic (SH) intensity by approximately a factor of 103.
© 1990 Optical Society of America
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