Intense red upconversion emission in infrared excited holmium-doped PbGeO3-PbF2-CdF2 transparent glass ceramic

Abstract Intense red upconversion emission around 650 nm in PbGeO3–PbF2–CdF2 transparent glass ceramic containing β-PbF2:Ho3+ nanocrystals, is presented. The holmium-doped vitroceramic samples were excited by a 980 nm diode laser source. The 650 nm upconversion signal was assigned to the 5F5→5I8 transition of holmium ions. Very low intensity signals around 490 and 540 nm corresponding to the 5F2,3→5I8 and 4S2,5F4→5I8 transitions, respectively, were also detected. The upconversion excitation mechanism was achieved through a combination of stepwise phonon-assisted multiphoton absorption, cross-relaxation processes involving pairs of holmium ions, and excited-state absorption. Using a diode laser pump source around 850 nm green upconversion emission around 540 nm was the observed predominant signal.

[1]  L. Johnson,et al.  Infrared‐Pumped Visible Laser , 1971 .

[2]  F. Auzel.  Rare Earth Doped Vitroceramics: New, Efficient, Blue and Green Emitting Materials for Infrared Up‐Conversion , 1975 .

[3]  Matthew John Dejneka,et al.  The luminescence and structure of novel transparent oxyfluoride glass-ceramics , 1998 .

[4]  R. Macfarlane,et al.  A Three-Color, Solid-State, Three-Dimensional Display , 1996, Science.

[5]  H. Poignant,et al.  Room temperature CW tunable green upconversion holmium fibre laser , 1990 .

[6]  Yoji Kawamoto,et al.  Highly efficient green up-conversion luminescence of Nd3+–Yb3+–Ho3+ codoped fluorite-type nanocrystals in transparent glass ceramics , 2002 .

[7]  J. Eden,et al.  Glass-fiber lasers in the ultraviolet and visible , 1995 .

[8]  M. Wermuth,et al.  Mechanisms of near-infrared to visible upconversion in CsCdBr3:Ho3+ , 1998 .

[9]  Kazuyuki Hirao,et al.  Preparation and optical properties of transparent glass‐ceramics containing β‐PbF2:Tm3+ , 1995 .

[10]  Paras N. Prasad,et al.  Blue cooperative upconversion in Yb3+-doped multicomponent sol-gel-processed silica glass for three-dimensional display , 2000 .

[11]  F. Auzel,et al.  Materials and devices using double-pumped-phosphors with energy transfer , 1973 .

[12]  I. Pracka,et al.  Infra-red to visible up-conversion in holmium-doped materials , 2002 .

[13]  Younes Messaddeq,et al.  Energy transfer assisted frequency upconversion in Ho3+ doped fluoroindate glass , 2002 .

[14]  B. R. Reddy,et al.  Spectroscopic and two-photon upconversion studies of Ho3+-doped Lu3Al5O12 , 1998 .

[15]  Daisuke Matsuura,et al.  Red, green, and blue upconversion luminescence of trivalent-rare-earth ion-doped Y2O3 nanocrystals , 2002 .

[16]  J. C. Wright.  Up-conversion and excited state energy transfer in rare-earth doped materials , 1976 .

[17]  M. S. Frant,et al.  Use of a total ionic strength adjustment buffer for electrode determination of fluoride in water supplies. , 1968, Analytical chemistry.

[18]  J. Eden,et al.  Tuning, temporal, and spectral characteristics of the green (/spl lambda//spl sim/549 nm), holmium-doped fluorozirconate glass fiber laser , 1996 .

[19]  Junichi Ohwaki,et al.  New transparent vitroceramics codoped with Er3+ and Yb3+ for efficient frequency upconversion , 1993 .

[20]  Xiao Zhang,et al.  Energy transfer upconversion in and doped crystals , 1998 .

[21]  H. Seo,et al.  Infrared to visible up-conversion in Cr : Tm : Ho : YAG , 2000 .