Photovoltaic effect in a periodically poled lithium niobate Solc-type wavelength filter

摘要

We report a non-field-applied Solc-type filter constructed by a periodically poled lithium niobate (PPLN). By comparing two types of PPLN Solc filter setup, both theoretically and experimentally, we have proved that without external field applied, it is the photovoltaic effect that introduces pass peak in the PPLN band filter.