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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 18, Iss. 22 — Nov. 15, 1993
  • pp: 1928–1930

Spectroscopic properties of Cr4+:Lu3Al5O12

H. Eilers, U. Hömmerich, S. M. Jacobsen, W. M. Yen, and M. Kokta  »View Author Affiliations


Optics Letters, Vol. 18, Issue 22, pp. 1928-1930 (1993)
http://dx.doi.org/10.1364/OL.18.001928


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Abstract

We report on the near-infrared absorption, emission, and lifetime data of Cr4+:Lu3Al5O12 (Cr:LAG) and compare the results with the known laser material Cr4+-doped Y3Al5O12 (Cr:YAG). Lu3Al5O12 has a smaller unit cell than Y3Al5O12, and this feature is reflected in its spectroscopic properties. The low-temperature luminescence spectrum is shifted by 85 cm−1 to higher energy compared with Cr:YAG. The luminescence lifetime of Cr:LAG at 10 K is 28.7 μs (Cr:YAG, 30.6 μs) and at 300 K is 4.3 μs (Cr:YAG, 3.5 μs). From these lifetimes we postulate that the quantum efficiency in Cr:LAG is higher than in Cr:YAG. We discuss the potential of Cr:LAG as a tunable near-infrared laser.

© 1993 Optical Society of America

History
Original Manuscript: May 25, 1993
Published: November 15, 1993

Citation
H. Eilers, M. Kokta, U. Hömmerich, S. M. Jacobsen, and W. M. Yen, "Spectroscopic properties of Cr4+:Lu3Al5O12," Opt. Lett. 18, 1928-1930 (1993)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-18-22-1928

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