Measurement of quantum efficiency in Pr3+-doped CaAl4O7 and SrAl4O7 crystals

Xiao Jun Wang; Shihua Huang; Lizhu Lu; William M. Yen; A. M. Srivastava; A. A. Setlur

doi:10.1063/1.1407296

Measurement of quantum efficiency in Pr³⁺-doped CaAl₄O₇ and SrAl₄O₇ crystals

Xiao Jun Wang, Shihua Huang, Lizhu Lu, William M. Yen, A. M. Srivastava, A. A. Setlur

Biochemistry, Chemistry & Physics

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

We demonstrated a method for measuring the quantum efficiency of deep UV emission using the two-step excitation and the difference of the integrated spectral intensities in Pr³⁺-doped CaAl₄O₇ and SrAl₄O₇ crystals. The quantum efficiencies of the emission from the lowest 4f5d state in the two systems have been estimated to be less than 10% at room temperature. The effect of excited-state absorption of the lowest 4f5d state is analyzed for the quantum efficiency measurement. The actual efficiency may be higher when this effect is taken into account, especially under the condition of strong excitation.

Original language	English
Pages (from-to)	2160-2162
Number of pages	3
Journal	Applied Physics Letters
Volume	79
Issue number	14
DOIs	https://doi.org/10.1063/1.1407296
State	Published - Oct 1 2001

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Physics and Astronomy (miscellaneous)

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title = "Measurement of quantum efficiency in Pr3+-doped CaAl4O7 and SrAl4O7 crystals",

abstract = "We demonstrated a method for measuring the quantum efficiency of deep UV emission using the two-step excitation and the difference of the integrated spectral intensities in Pr3+-doped CaAl4O7 and SrAl4O7 crystals. The quantum efficiencies of the emission from the lowest 4f5d state in the two systems have been estimated to be less than 10% at room temperature. The effect of excited-state absorption of the lowest 4f5d state is analyzed for the quantum efficiency measurement. The actual efficiency may be higher when this effect is taken into account, especially under the condition of strong excitation.",

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T1 - Measurement of quantum efficiency in Pr3+-doped CaAl4O7 and SrAl4O7 crystals

AU - Wang, Xiao Jun

AU - Huang, Shihua

AU - Lu, Lizhu

AU - Yen, William M.

AU - Srivastava, A. M.

AU - Setlur, A. A.

PY - 2001/10/1

Y1 - 2001/10/1

N2 - We demonstrated a method for measuring the quantum efficiency of deep UV emission using the two-step excitation and the difference of the integrated spectral intensities in Pr3+-doped CaAl4O7 and SrAl4O7 crystals. The quantum efficiencies of the emission from the lowest 4f5d state in the two systems have been estimated to be less than 10% at room temperature. The effect of excited-state absorption of the lowest 4f5d state is analyzed for the quantum efficiency measurement. The actual efficiency may be higher when this effect is taken into account, especially under the condition of strong excitation.

AB - We demonstrated a method for measuring the quantum efficiency of deep UV emission using the two-step excitation and the difference of the integrated spectral intensities in Pr3+-doped CaAl4O7 and SrAl4O7 crystals. The quantum efficiencies of the emission from the lowest 4f5d state in the two systems have been estimated to be less than 10% at room temperature. The effect of excited-state absorption of the lowest 4f5d state is analyzed for the quantum efficiency measurement. The actual efficiency may be higher when this effect is taken into account, especially under the condition of strong excitation.

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JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Measurement of quantum efficiency in Pr³⁺-doped CaAl₄O₇ and SrAl₄O₇ crystals

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