Journal of Applied Physics

Ytterbium as a probe of the local lattice environment in GaxIn(1−x)P crystals

A. Kozanecki, Zbigniew Kaliński, J. Raczyńska, Jerzy M. Langer

Published Oct 1, 1989• 11 citations

Abstract

Environmental effects in the intraimpurity emission of Yb3+(2F5/2-2F7/2 intracenter transition) in GaxIn1−xP (0<x<0.3) bulk crystals are reported. Cationic disorder manifests itself in the appearance of line splittings and substantial broadening of all the emission lines with increasing Ga contents. Spectra of the crystals with small Ga contents are dominated by emission from two types of centers. One, typical of InP:Yb, corresponds to Td symmetry, while the second is most likely due to a Yb center perturbed by the presence of a single Ga atom in the next-nearest-neighbor position (Yb-P4-In11-Ga).

DOI: 10.1063/1.344135

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Journal of Applied Physics

Ytterbium as a probe of the local lattice environment in GaxIn(1−x)P crystals

A. Kozanecki, Zbigniew Kaliński, J. Raczyńska, Jerzy M. Langer

Published Oct 1, 1989• 11 citations

Publisher

Abstract

DOI: 10.1063/1.344135

Related papers

Zeeman analysis of the ytterbium luminescence in indium phosphide

G. Aszódi, J. Weber, Ch. Uihlein +5 more

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Physical review. B, Condensed matterJun 15, 198572 citations

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J. Wagner, J. C. Windscheif, Helmut Ennen

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Spectroscopy of Yb 3 + : CaF 2 : From isolated centers to clusters

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Kinetics and quenching mechanisms of photoluminescence in Yb-doped InP

H. J. Łożykowski, A. K. Alshawa, Ian G. Brown

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Journal of Applied PhysicsOct 15, 199420 citations

Ytterbium-doped InP emits a characteristic luminescence band near 1.0 \ensuremath{\mu}m, arising from intra-4f-shell transitions of

{\mathrm{Yb}}^{3+}

{\mathrm{f}}^{13}

). A Zeeman analysis of the complex set of emission lines, in magnetic fields up to 22 T, reveals that the spectrum arises almost entirely from only one type of cubic Yb center, presumably on a substitutional cation site.

Photoluminescence excitation measurements were performed on InP: Yb, using a tunable LiF:

{\mathrm{F}}_{2}^{+}

colorcenter laser. The excitation spectra show that only one dominant

{\mathrm{Yb}}^{3+}

(

4{f}^{13}

) center is responsible for the complex set of emission lines observed in the 1.0-\ensuremath{\mu}m spectral range. With the combination of the present results with data obtained by photoluminescence experiments the observed emission lines can be ordered into a level scheme with a twofold-split initial (

^{2}F_{\frac{5}{2}}

) and a threefold-split (

^{2}F_{\frac{7}{2}}

) ground state.

A detailed spectroscopic study of

{\text{Yb}}^{3+}:{\text{CaF}}_{2}

is made by using laser selective excitation, low-temperature time-resolved fluorescence, and Raman techniques. Three dominant types of

{\text{Yb}}^{3+}

isolated ion centers are identified at very low

(0.03\text{ }\text{at}\text{.}\text{ }%)

dopant concentration: two of them with cubic and tetragonal symmetries and the third one not clearly identified but likely of trigonal symmetry. Fluorescence decays strongly differ from one site to another. The overall measured positions of the Stark sublevels of the

{^{2}F}_{7/2}

and

{^{2}F}_{5/2}

multiplets are satisfactorily explained by the crystal-field calculations. On the other hand, at higher dopant concentrations, only one dominant class of

{\text{Yb}}^{3+}

centers occurs which corresponds to some hexameric cluster in which the

{\text{Yb}}^{3+}

ions site in nearly tetragonal crystal-field environments and whose energy-level positions are discussed and compared with those previously reported in the literature.