Optical properties of Er-doped Gax(Ge0.3Se0.7)100−x glasses

Munzar, M.; Koughia, Cyril; Tonchev, D.; Maeda, Kouji; Ikari, Tetsuo; Haugen, C.J.; DeCorby, R. G.; McMullin, J.N.; Kasap, S. O.

doi:10.1016/j.optmat.2004.06.007

Cited by 38 publications

(20 citation statements)

References 49 publications

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“…5), (2) Urbachlike type optical transition ( Fig. 6) where E g ³ E 03 D h at˛D 10 3 cm 1 is adopted 22 and (3) non-direct optical transition (Fig. 7).…”

Section: Resultsmentioning

confidence: 99%

Raman studies and optical properties of some (PbO)_x(Bi₂O₃)_0.2(B₂O₃)_0.8−x glasses

Kotkova

Tichá

Tichý

2008

J Raman Spectroscopy

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Five (PbO) x (Bi 2 O 3 ) 0.2 (B 2 O 3 ) 0.8−x glasses, where x = 0, 0.2, 0.3, 0.4 and 0.6, were prepared. The dilatometric glass transition temperature (T g ) was found in the region 470 .x = 0/ ½ T g (°C) ½ 347 (x = 0.6), and the density (r) varied within 4.57 .x = 0/ Ä r (g/cm 3 ) Ä 8.31 (x = 0.6). Raman spectra indicated the conversion of BO 3 to BO 4 entities for low x values but for x > 0.3, namely, for x → 0.6, back-conversion occurred, most probably. From the measurements of the optical transmission on very thin bulk samples, the room temperature optical gap values (E g ) were determined to be in the range 4.03 .x = 0/ ½ E g (eV) ½ 3.08 (x = 0.6). The temperature (T) dependence of the optical gap (E g (T)) in the region 300 Ä T(K) Ä 600 was examined and approximated by a linear relationship of the form of E g .T/ = E g .0/ − gT, where g × 10 −4 (eV/K) varied from 5.1 to 6.8. The non-linear refractive index (n 2 ) was estimated from the optical gap values and it was found to correspond to the n 2 values calculated from the experimental third-order non-linear optical susceptibility taken from the literature.

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“…5), (2) Urbachlike type optical transition ( Fig. 6) where E g ³ E 03 D h at˛D 10 3 cm 1 is adopted 22 and (3) non-direct optical transition (Fig. 7).…”

Section: Resultsmentioning

confidence: 99%

Raman studies and optical properties of some (PbO)_x(Bi₂O₃)_0.2(B₂O₃)_0.8−x glasses

Kotkova

Tichá

Tichý

2008

J Raman Spectroscopy

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“…Thus, Er 3+ ions are located in the glass matrix far from heterogeneities, which can influence the energy position of the electronic states in the 4f-shell of Erbium. Other bands 1, 3 and 4 ( Table 2) are probably associated with electronic transitions between energy levels in the 4f-shell of Er 3+ ion, split by the local electric field of the glass matrix near the heterogeneities (LSD) [11]. Such assumption is confirmed by the large half-widths of the bands 1, 3 and 4 as compared to the band 2 (Table 1).…”

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confidence: 76%

Photoluminescence in Er‐doped AgGaS₂–GeS₂ glasses

Halyan

Kevshyn

Kogut

et al. 2009

Phys. Status Solidi (c)

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In this work study of photoluminescence (PL) spectra in the Er‐doped glasses of the AgGaS2‐GeS2 system is presented. Emission spectra of the glasses at T ≈ 292 K, excited by light with λex ≈ 980 nm and λex ≈ 532 nm are described well by transitions in the 4f‐shell of Er3+ ions. Spectral curves of the emission can be deconvoluted into four Gaussian components. Er atoms are localized both in the glass matrix and (with increased concentration) around large structural damages (heterogeneities) which are drains for them. This causes broadening of the emission bands of Er3+ ions that are localized around heterogeneities. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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“…It should be noted that increasing the Ga content also increases the Se content to maintain the stoichiometric composition. In contrast, the host glasses based on simply adding Ga to GeSe, that is, (Ge x Se 1Àx ) 1Ày Ga y cannot accommodate as much Er as stoichiometric glasses and have poorer PL properties at high Er concentrations as shown previously [13]. The mixtures were loaded into fused silica ampoules and evacuated to 10 À5 Torr.…”

Section: Methodsmentioning

confidence: 99%

Recent photoluminescence research on chalcogenide glasses for photonics applications

Kasap

Koughia

Munzar

et al. 2007

Journal of Non-Crystalline Solids

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Optical properties of Er-doped Gax(Ge0.3Se0.7)100−x glasses

Cited by 38 publications

References 49 publications

Raman studies and optical properties of some (PbO)_x(Bi₂O₃)_0.2(B₂O₃)_0.8−x glasses

Raman studies and optical properties of some (PbO)_x(Bi₂O₃)_0.2(B₂O₃)_0.8−x glasses

Photoluminescence in Er‐doped AgGaS₂–GeS₂ glasses

Recent photoluminescence research on chalcogenide glasses for photonics applications

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Optical properties of Er-doped Gax(Ge0.3Se0.7)100−x glasses

Cited by 38 publications

References 49 publications

Raman studies and optical properties of some (PbO)x(Bi2O3)0.2(B2O3)0.8−x glasses

Raman studies and optical properties of some (PbO)x(Bi2O3)0.2(B2O3)0.8−x glasses

Photoluminescence in Er‐doped AgGaS2–GeS2 glasses

Recent photoluminescence research on chalcogenide glasses for photonics applications

Contact Info

Product

Resources

About

Raman studies and optical properties of some (PbO)_x(Bi₂O₃)_0.2(B₂O₃)_0.8−x glasses

Raman studies and optical properties of some (PbO)_x(Bi₂O₃)_0.2(B₂O₃)_0.8−x glasses

Photoluminescence in Er‐doped AgGaS₂–GeS₂ glasses