Abstract
Spatial modulation of the nonlinear/elec-tro-optic coefficient renews the old-fashioned materials and produces new efficient optical devices.1−5 Above all, the devices that employ a domain structure, exhibit high performance because of the high modulation depth of the coefficient. A popular domain-controlled device is a quasi-phase-matched wavelength converter such as frequency doubler3,4 and optical parametric oscillator,5 which has been developed with domain-control techniques in recent years.
© 1996 Optical Society of America
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