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Optics Letters

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  • 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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References

  1. W. Jia, B. M. Tissue, L. Lu, K. R. Hoffman, W. M. Yen, in Advanced Solid-State Lasers, G. Dubé, L. Chase, eds., Vol. 10 of OSA Proceedings Series (Optical Society of America, Washington, D.C., 1991), pp. 87–91.
  2. K. R. Hoffman, U. Hömmerich, S. M. Jacobsen, W. M. Yen, J. Lumin. 52, 277 (1992). [CrossRef]
  3. S. Geller, Z. Kristallogr. 125, 1 (1967). [CrossRef]
  4. A. V. Shestakov, Russian Academy of Sciences, Moscow, Russia (personal communication, 1991).
  5. N. I. Borodin, A. G. Okhrimchuk, A. V. Shestakov, in Advanced Solid-State Lasers, L. L. Chase, A. A. Pinto, eds., Vol. 13 of OSA Proceedings Series (Optical Society of America, Washington, D.C., 1992), pp. 42–46.
  6. P. S. May, H. U. Güdel, J. Lumin. 46, 277 (1990). [CrossRef]

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