🌐EnglishEnglishDeutschFrançaisItalianoTürkçeفارسی中文日本語EntityQ505293· pop 8· linked from 28 articlesphotorefractive effectnonlinear optical effectAvailable in 8 languagesFrançaisDeutschItalianoCatalanHebrewTürkçeفارسیvia Wikidata sitelinks · CC0Connectionsnonlinear opticsEntitylightEntityCategoriesHolographyNonlinear opticsOptical materials