2篇
您的检索式：作者名="L.Rama Moorthy"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | A study on fluorescence properties of Eu^(3+) ions in alkali lead tellurofluoroborate glasses显示文摘Glasses with chemical composition of (in mol.%): 26 RF-20 PbO-10 TeO2-43 H3BO3-1 EuO3 (RLTB) were prepared by conventional melt quenching method. The Judd-Ofelt intensity parameters Ω2 and Ω6 were obtained from the absorption intensities of 7F0→5D2 and 7F0→5L6 transitions, respectively. In order to overcome the problem of applicability of Judd-Ofelt analysis at room temperature due to the overlapping of the transitions originating from 7F0 and 7F1 levels of Eu3+ ion, the effect of the thermalization on the population of energy levels was taken into account. The photoluminescence spectra contained five emission bands originating from the 5D0 metastable state to 7FJ (J=0, 1, 2, 3, 4) lower lying states. The decay profiles were found to be single exponential in all the three glasses. The measured lifetimes (τmes) were in good agreement with the calculated lifetimes (τcal) obtained by using the thermally corrected Judd-Ofelt intensity parameters. | S.A.Saleem B.C.Jamalaiah A.Mohan Babu K.Pavani L.Rama Moorthy | 2010 | Journal of Rare Earths2010，28，2： | 1 |
| 2 | Investigation on 1.07 μm laser emission in Nd^(3+)-doped sodium fluoroborate glasses显示文摘Spectroscopic and fluorescence properties of Nd 3+ ions in sodium fluoroborate(SFB) glasses were prepared and characterized through optical absorption,emission and decay measurements.The energy level analysis was carried out using free-ion Hamiltonian model.Experimental oscillator strengths were determined by measuring the area encompassed by the absorption peaks recorded for 1.0 mol.% Nd 3+-doped glasses.The Judd-Ofelt parameters(2,4,6) were used to evaluate the laser characteristic parameters such as radiative transition probability(A R),radiative decay time(τ R),fluorescence branching ratio(β R) and stimulated emission cross-section(σ e) for the 4 F 3/2 metastable state.The fluorescence spectra for different concentrations of Nd 3+ ions were recorded by exciting the samples at 514.5 nm Ar + ion laser. | D.Umamaheswari B.C.Jamalaiah T.Sasikala G.V.Lokeswara Reddy L.Rama Moorthy | 2012 | Journal of Rare Earths2012，30，5： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员