Tuesday, July 20, 2010

SEMINAR: 7.22.10 / CREOL 102 / 11-12pm / "Transparentpolycrystalline YAG ceramics for new technology solid-statelasers"

"Transparent polycrystalline YAG ceramics for new technology solid-state lasers"


Thursday, July 22, 2010 / 11:00am-12:00pm

Victor Valles-Gomez


Recently developed optical ceramics promise to combine the excellent physical properties of crystalline optical materials (e.g. high thermal conductivity, chemical stability) with increased thermal shock resistance, mechanical strength, fabrication flexibility and lower cost. In this talk I will review the development of this exciting field and describe some applications of optical ceramics as functional and structural materials. Then I will focus on the results of my research on the successful fabrication of ceramic composite slabs by slip-casting of commercial Nd:YAG nanopowders. The characterisation of Nd diffusion resulting from high-temperature vacuum sintering will also be discussed and I will describe how composite slabs could improve pump absorption efficiency and thermal management in high power solid state lasers.


Dr. Valles-Gomez obtained his PhD in Physics from Heriot-Watt University in May 2010. He worked with the Lasers and Photonics Applications Group in the School of Engineering and Physical Sciences under the direction of Professor Howard J. Baker. He received a MS in Optics from the Center for Scientific Research and Higher Education of Ensenada (CICESE), Mexico, in 2004.

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