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Zinc-indiffused MgO:PPLN waveguides for blue/UV generation via VECSEL pumping

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Details

Original languageEnglish
Pages (from-to)4921-4926
Number of pages6
JournalApplied Optics
Volume59
Issue number16
DOIs
Publication statusPublished - 1 Jun 2020
Publication typeA1 Journal article-refereed

Abstract

We present the design and characterization of a zinc-indiffused periodically poled lithium-niobate ridge waveguide for second-harmonic generation of ∼390 nm light from 780 nm. We use a newly developed, broadband near-infrared vertical external-cavity surface-emitting laser (VECSEL) to investigate the potential for lower-footprint nonlinear optical pump sources as an alternative to larger commercial laser systems. We demonstrate a VECSEL with an output power of 500 mW, containing an intracavity birefringent filter for spectral narrowing and wavelength selection. In this first demonstration of using a VECSEL to pump a nonlinear waveguide, we present the ability to generate 1 mW of ∼390 nm light with further potential for increased efficiency and size reduction.