Yu, N.E.N.E.YuChoi, J.W.J.W.ChoiKang, H.H.KangKo, D.-K.D.-K.KoFu, S.-H.S.-H.FuLiou, J.-W.J.-W.LiouKung, A.H.A.H.KungChoi, H.J.H.J.ChoiKim, B.J.B.J.KimCha, M.M.ChaLUNG-HAN PENG2020-06-112020-06-11201410944087https://scholars.lib.ntu.edu.tw/handle/123456789/499530https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893975974&doi=10.1364%2fOE.22.003547&partnerID=40&md5=e06e5f841b3c53f8946242fe71cb6352A broadband green light source was demonstrated using a tandem-poled lithium niobate (TPLN) crystal. The measured wavelength and temperature bandwidth were 6.5 nm and 100°C, respectively, spectral bandwidth was 36 times broader than the periodically poled case. Although the conversion efficiency was smaller than in the periodic case, the TPLN device had a good figure of merit owing to the extremely large bandwidth for wavelength and temperature. The developed broadband green light source exhibited speckle noise approximately one-seventh of that in the conventional approach for a laser projection display. © 2014 Optical Society of America.journal article10.1364/OE.22.0035472-s2.0-84893975974