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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 57, Iss. 10 — Oct. 1, 1967
  • pp: 1221–1225

Quantum Efficiency of Nd3+ in Glass, Calcium Tungstate, and Yttrium Aluminum Garnet

RICHARD A. BRANDEWIE and CHARLES L. TELK  »View Author Affiliations

JOSA, Vol. 57, Issue 10, pp. 1221-1225 (1967)

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Measurements of absorption and excitation spectra for Nd3+ in soda-lime silicate glass, CaWO4, and Y3Al2(AlO4)3 (YAG) are presented. The relative quantum efficiency for 4F3/24I11/2 fluorescence is evaluated for principal absorptions over the wavelength range 3250–9300 Å. For the crystals, quantum efficiency is found to be independent of the level pumped, to within ±12% for CaWO4 and ±13% for YAG. Except for slight quenching of levels between 4000 and 5500 Å, quantum efficiency for the glass sample is independent of pumping level to within ±5%. These results indicate that the efficiency of each step in the process which populates the 4F3/2 level is near unity. Also, over the range of structures investigated, relative Nd3+ quantum efficiency appears to be independent of the details of crystal-field structure.

RICHARD A. BRANDEWIE and CHARLES L. TELK, "Quantum Efficiency of Nd3+ in Glass, Calcium Tungstate, and Yttrium Aluminum Garnet," J. Opt. Soc. Am. 57, 1221-1225 (1967)

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