Lai, C.C.C.C.LaiSHENG-LUNG HUANGWang, S.H.S.H.WangHo, W.C.W.C.HoLiu, S.K.S.K.LiuTsai, C.N.C.N.Tsai2018-09-102018-09-102013http://www.scopus.com/inward/record.url?eid=2-s2.0-84885441121&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/379900Over 90% enhancement of efficient Cr4+ emission in Ca, Cr:YAG doubled-clad crystal fiber is achieved by CaO perimeter deposition, followed by oxygen annealing treatment. The corresponding strain effects on the Cr 4+ broadband emission are also discussed. © 2013 IEEE.Broadband emission; Crystal fiber; Crystalline core; Oxygen annealing; Strain effect; Amplifiers (electronic); Fiber amplifiersconference paper10.1109/CLEOPR.2013.66002982-s2.0-84885441121