Exciting news from HC Photonics: >4 W @ 775 nm by CW-SHG in a PPLN waveguide.
Recently GWU’s partner HC Photonics introduced a new generation of MgO-doped PPLN waveguides. The technology allows for high power cw second harmonic generation with high efficiency. The results have been published in the prestigious journal “Optics Letters”.
From the abstract:
The power scaling of continuous-wave (CW) second harmonic generation (SHG)in a MgO:periodically poled lithium niobite(PPLN) ridge waveguide is investigated. The nonlinear coefficient and propagation loss factors of the MgO:PPLN waveguide are verified for future reference. The MgO:PPLN waveguide structure is determined according to a practical fiber coupling configuration, as well as the theoretical model of output power characteristics. Utilizing the designed MgO:PPLN waveguide, the 775 nm SHG power successfully reaches up to 4.02W at an incident power of 7W with overall conversion efficiency of 58%. Finally, a compact all-fiber waveguide conversion module is demonstrated for verifying the feasibility of commercial applications. ©2021 Optical Society of America
If you are interested in the PPLN and PPLN waveguide technology, please check out the HCP products on our web page. If you have any questions or if you need further information please do not hesitate to contact us!