| 概 要 |
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10:00-11:00 |
Speaker 1: Dr. Jasbinder Sanghera (Head of Optical Materials and Devices Branch, U.S. Naval Research Laboratory)
Title: An overview of Ceramic Laser Materials
Abstract:
Ceramic laser materials have come a long way since the first demonstration of lasing in 1964. Improvements in powder synthesis and ceramic sintering as well as novel ideas have led to notable achievements. These include the first Nd:YAG ceramic laser in 1995, breaking the 1 KW mark in 2002 and then the remarkable demonstration of more than 100 KW output power from a YAG ceramic laser system in 2009.
Additional developments have included highly doped microchip lasers, ultrashort pulse lasers, novel materials such as sesquioxides, fluoride ceramic lasers, selenide ceramic lasers in the 2 to 3 um region, composite ceramic lasers for better thermal management, and single crystal lasers derived from polycrystalline ceramics. I will discuss these notable achievements along with others, including work done in my laboratory. |
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11:00-12:00 |
Speaker 2: Dr. Bruno Viana (Senior Scientist, LCMCP, ENSCP (Chimie ParisTech)
Title: Materials for lasers and medical imaging at the LCMCP Paris
Abstract:
The Laboratory of Condensed Matter Chemistry of Paris (LCMCP) is a recognized actor in the field of advanced materials. It covers all important domains of materials chemistry, from molecular (bottom-up) to solid state (top-down) approaches. The researchers from the Photonics group at the LCMCP-ENSCP are specialists of the optical properties of solids. The seminar will present first crystalline materials for applications on near infrared laser with a focus on the Yb:CALGO which recently appears as an interesting host for high power and ultrafast lasers (fs lasers). Second, ceramics are developed for medical imaging and then nanomaterials are investigated for optical imaging. In addition we were able to perform nano-structuration of materials and this can be very important in photon management in the photovoltaic field for instance or in the research of new nano-LED. |
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