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Engineering competing nonlinearities
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DOI：10.1364/OL.24.001413.png)
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Weak modulation of a quasi-phase-matching (QPM) grating opens possibilities for engineering both the average quadratic nonlinearity and the incoherent average cubic nonlinearity induced by QPM. The relative strength of the average quadratic and effective (intrinsic plus induced) cubic nonlinearity is studied for LiNbO3. We show how the induced average cubic nonlinearity can be engineered to dominate the intrinsic material cubic nonlinearity and how doing so will allow the intensity at which the quadratic and cubic nonlinearities balance and thus compete to be decreased to a few gigawatts per square centimeter. (C) 1999 Optical Society of America OCIS codes: 070.4340. 050.2770, 060.4080, 190.5530.
Keyword:
PHASE-MATCHING GRATINGS
POLED LITHIUM-NIOBATE
2ND-HARMONIC GENERATION
COMPRESSION
SOLITONS
MEDIA
SHIFT
期刊
IF:
3.3
论文数:
4.0W
被引数:
7.6W
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