Wavelength and position tuning of Čerenkov second-harmonic generation in optical superlattice
Date
2011-11-04
Authors
Kalinowski, Ksawery
Kong, Qian
Roppo, Vito
Arie, Ady
Sheng, Yan
Krolikowski, Wieslaw
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American Institute of Physics (AIP)
Abstract
We study experimentally the Čerenkov second-harmonic generation in an optical superlattice formed in periodically poled lithium niobate crystal. We demonstrate strong sensitivity of the Čerenkov signal to the wavelength, diameter, and position of the incident fundamental beam. We model the observed behavior by using simple approach based on multiple interference of second harmonic signals emitted from the vicinity of the domain walls.
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Keywords: Multiple interferences; Optical superlattice; Periodically poled lithium niobate crystals; Second harmonic signals; Simple approach; Domain walls; Harmonic analysis; Lithium; Niobium compounds; Superlattices; Harmonic generation
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Applied Physics Letters
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