High-efficiency second harmonic generation of blue light on thin-film lithium niobate

Park, Taewon; Stokowski, Hubert S.; Ansari, Vahid; McKenna, Timothy P.; Hwang, Alexander Y.; Fejer, M. M.; Safavi-Naeini, Amir H.

doi:10.1364/OL.455046

High-efficiency second harmonic generation of blue light on thin-film lithium niobate

Journal Article · Thu May 19 00:00:00 EDT 2022 · Optics Letters

DOI:https://doi.org/10.1364/OL.455046· OSTI ID:1868795

Park, Taewon; ; ; ; Hwang, Alexander Y.; Fejer, M. M.; Safavi-Naeini, Amir H.

The strength of interactions between photons in a χ ⁽²⁾ nonlinear optical waveguide increases at shorter wavelengths. These larger interactions enable coherent spectral translation and light generation at a lower power, over a broader bandwidth, and in a smaller device: all of which open the door to new technologies spanning fields from classical to quantum optics. Stronger interactions may also grant access to new regimes of quantum optics to be explored at the few-photon level. One promising platform that could enable these advances is thin-film lithium niobate (TFLN), due to its broad optical transparency window and possibility for quasi-phase matching and dispersion engineering. In this Letter, we demonstrate second harmonic generation of blue light on an integrated thin-film lithium niobate waveguide and observe a conversion efficiency of η ₀ = 33, 000%/W- cm ² , significantly exceeding previous demonstrations.

View Accepted Manuscript (Publisher)

Sponsoring Organization:: USDOE

Grant/Contract Number:: SC0019174

OSTI ID:: 1868795

Alternate ID(s):: OSTI ID: 1980983

Journal Information:: Optics Letters, Journal Name: Optics Letters Journal Issue: 11 Vol. 47; ISSN 0146-9592; ISSN OPLEDP

Publisher:: Optical Society of AmericaCopyright Statement

Country of Publication:: United States

Language:: English

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