Green bright squeezed light from a cw periodically poled KTP second harmonic generator

Publication: Research - peer-reviewJournal article – Annual report year: 2002

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We present the experimental observation of bright amplitude squeezed light from a singly resonant second harmonic generator (SHG) based on a periodically poled potassium titanyl phosphate (KTP) crystal. Contrary to conventional SHG, the interacting waves in this device couple efficiently using quasi phase matching (QPM) and more importantly QPM allows access to higher valued elements of the nonlinear tensor than is possible under the constraint of birefringence phase matching. We observe a noise reduction of 13% below the shot noise limit in the generated second harmonic field. This noise reduction is greater than what could be expected using normal birefringence phase matched KTP with the same experimental parameters. Excellent agreement between experiment and theory is found. (C)2002 Optical Society of America.
Original languageEnglish
JournalOptics express
Publication date2002
Volume10
Issue17
Pages887-892
ISSN1094-4087
StatePublished
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