Co-casting and optical characteristics of transparent segmented composite Er:YAG laser ceramics

Elizabeth R. Kupp, Gary L. Messing, Julie M. Anderson, Venkatraman Gopalan, John Q. Dumm, Charles Kraisinger, Nikolay Ter-Gabrielyan, Larry D. Merkle, Mark Dubinskii, Vida K. Simonaitis-Castillo, Gregory J. Quarles

Research output: Contribution to journalArticlepeer-review

68 Scopus citations


A novel colloidal co-casting process was developed to fabricate laser quality, multisegment composite ceramic laser gain materials. The approach was demonstrated for a three segment transparent composite rod 62 mm long by 3 mm diameter consisting of undoped yttrium aluminus garnet (YAG), 0.25% EnYAG, and 0.5% Er:YAG. The Er concentration profile in the composite has steep, controllable gradients at the segment interfaces, while maintaining constant dopant concentrations within each segment. The composite rod has 84% transmittancc at 1645 nm (the lasing wavelength) with a scatter loss of 0.4% cm-1 . Laser operation of such a compositeEr:YAG ceramic rod was demonstrated for the first time, with nearly equivalent lasing behavior to an EnYAG single crystal rod.

Original languageEnglish (US)
Pages (from-to)476-483
Number of pages8
JournalJournal of Materials Research
Issue number3
StatePublished - Mar 2010

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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