Confirmed Invited Speakers Author Title Abstract Boulon, G. Segregation phenomenon of rare earth dopants in ceramics We analyse segregation phenomenon of Ce 3+ (first position) and Yb 3+ (last position) rare earth dopants in grain and grain boundaries of oxide optical ceramics from imaging confocal microscopy and transmission electronic microscopy. Interpretation is related with growth from liquid phase. Dong, J. Comparative investigation of cw and Q-switched laser performance of Yb:YAG ceramics and crystals Gaume, R. Characterization of absorption losses in YAG laser ceramics We will report on comparative thermalized absorption measurements obtained in various YAG transparent ceramics and single-crystals. Correlations with lattice defects and impurities content will be discussed. Jaque, D. Microstructuration techniques for the development of minituarized Nd:YAG ceramic lasers The last developments achieved in the micro-structuration of Nd:YAG ceramic lasers for their incorporation in active photonic devices will be discussed. We will pay special attention to the fundamentals of the different techniques used up to now. Kaminskii, A. A. Where did the fifty-year search for laser crystal and ceramics take us? During half a century history of the laser era the search for laser crystals and ceramics has brought many important results. They have largely determined the development and formation of laser physics. Applications of laser crystals and ceramics are well known. Some of them (mainly with Ln 3+ lasants) in the report would be given special attention. Unfortunately, the further success of the search and application of laser crystal materials prevented a number of issues that have not been fully resolved over the years. Some of these problems will be considered in the report taking into account modern trends of laser physics and nonlinear optics. Kawanaka, J. High pulse energy and high average power laser by using a composite ceramic Diode-pumped solid-state laser has been developed by using a cryogenic composite ceramic. A novel laser amplifier arrangement of total-reflection active-mirror was proposed for high-pulse-energy and high-average-power simultaneously. The regenerative amplifier was demonstrated and a joule-class multi-pass amplifier is under construction. Khazanow, E. Specificity of thermal effects in laser ceramics as compared to single crystals: theory and experiments We review theoretical predictions and experimental confirmations of strong statistical dispersion of thermal lensing and thermally induced depolarization in ceramics. This effect is specific to ceramics and has no analogues either in glasses or in single crystals. Kuretake, S. Nd 3+ -doped Ba(Zr 4+ ,Mg 2+ ,Ta 5+ )O 3 ceramics as laser materials We report transparent Nd 3+ -doped Ba(Zr,Mg,Ta)O 3 (Nd:BZMT) ceramics as laser materials. The results of the structural analyses and the fluorescence properties in Nd:BZMT fabricated by adjusting the BZMT composition in order to substitute Nd dopants at different crystal sites will be reported. Menke, Y. Transparent ceramics for optical and fluorescence applications In this paper new developments in the fabrication of high refractive index materials with cubic crystal structure as possible matrix material for rare-earth activated compounds are described. Related applications in both optical and fluorescence application fields are illustrated. Shimonya, Y. Strength and strengthening of polycrystalline (ceramic) laser components Crystalline laser components may fracture under high thermally induced stress. In the present paper, ways to evaluate the tensile strength of crystalline and poly-crystalline laser components will be discussed, as well as paths to enhance their strength. Strk, W. Upconversion phenomena in Er-doped Yb:YAG nanocrystalline powders and ceramics Taira, T. Anisotropic ceramics as a next generation laser Transparent polycrystalline ceramics for laser applications have been demonstrated to offer tremendous processing and design advantages relative to Czochralski-grown single crystals. After the review of conventional ceramic lasers, we'd like to discuss the next generation of ceramic lasers based on anisotropic ceramics. Tanabe, S. Optical properties of transparent GdYAG:Ce ceramics for white LED Transparent Ce 3+ -doped GdYAG ceramics were fabricated by vacuum sintering of powders prepared by co-precipitation methods. By exciting with a blue LED, the ceramics on top showed excellent luminous efficacy and good color rendering as a white LED. In the photoluminescence spectra, the wavelength shift of the Ce 3+ :5d -4f transition was observed by Gd substitution of Y-site, as well as in the photoluminescence excitation spectra. Ueda, K. I. will be reported later Wei, G. Optical ceramics for solid state lighting Solid-state lighting utilizes new optical ceramics such as Ce-doped garnets to either combine emissions from the LED and ceramic for high-brightness white light, or fully convert to pure color. Precision fabrication achieves efficient luminescent ions, host lattices, and favorable absorption and emission. Weichmann, U. Ceramic materials for visible solid-state lasers For consumer applications of lasers, ceramic laser materials play an important role with respect to the integration aspects of the laser setup. In this contribution we will present results from our work on integrated green efficient lasers for projection systems. Zhang, J. Processing control for fabricating high quality Nd:YAG ceramics In this research, the effects of stoichiometry ratio, sintering aids, and sintering conditions on microstructure and further the optical quality of the sintered ceramics will be discussed. By optimizing the processing parameters, high optical quality YAG ceramics are fabricated successfully. 引用: https://en.fh-muenster.de/iot/LCS-2010/lcs-10_programme.php?p=7,0#a3
2008年国际激光陶瓷会议上我最值得期盼的报告是Dr. A.Ikesue的 CurrentandFutureStatusofCeramicLaser, 前面我已经比较详细的介绍了该报告的主要内容。接下来的一个邀请报告来之神岛化学公司(Konoshima)的Dr H. Yagi,他报告的题目是Recent advances in transparent ceramic laser materials。Dr H. Yagi虽然名气没有Dr. A. Ikesue那么响亮,但他绝对是激光陶瓷界的后期之秀,深得神岛化学公司Dr. T.Yanagitani的真传,大有青出于蓝而胜于蓝之势。第一次见到Dr H. Yagi是在2007年3月13日。应我所潘裕柏研究员、王士维研究员和冯锡淇研究员的邀请,神岛化学公司材料研发中心的T.Yanagitani(柳谷)教授带着H.Yagi等人来我所作了题为Konoshima's Optical Ceramics 的学术报告,详细介绍了神岛化学公司在光学透明陶瓷方向上的研究历史和最新研究动态,并就透明陶瓷在红外窗口、闪烁体、激光增益介质等方面的应用前景进行了生动的阐述。当T.Yanagitani教授被问及透明陶瓷的具体问题时,他都会说这个问题可以让Dr.H.Yagi来回答,足见Yagi博士在激光陶瓷研究上很有造诣。Dr.H.Yagi看起来也并不是特别起眼,用英文回答问题的时候也有点结结巴巴的。当我问及一些关键技术时,Dr.H.Yagi总会以It's a secret来答复。日本公司的研究人员太精明了,回答的时候滴水不漏,远没有和Dr. Ikesue交流的时候有收益。 第二次见到Dr.H.Yagi也就是在2008年的国际激光陶瓷会议上,受我所组织方的邀请,他在LCS2008上作了特约报告。Dr.H.Yagi太年轻了,博士毕业都没几年。这个报告主要展示了神岛化学公司近几年在激光陶瓷领域的最新进展,几乎涉及到激光陶瓷的所有体系,真让人万分佩服!报告结束后,我主动找Dr H.Yagi交流,可他说的最多的还是那句It's a secret。前段时间,在新加坡南洋理工大学从事博士后工作的章健博士回所做实验,在探讨的过程中,章健博士也提到H.Yagi,他说在Yagi博士眼里,其它国家在激光陶瓷领域的水平都相差不大,这也从侧面说明日本在激光陶瓷领域仍处在领先地位。接下来让我们来欣赏一下神岛化学在激光陶瓷领域的精彩工作。 Dr. Yagi在LCS2008上的报告 Dr. H. Yagi 神岛化学公司开发的透明陶瓷-1 神岛化学公司开发的透明陶瓷-2 注:照片引自Dr. Yagi在LCS2008的报告
10th Otto Schott Research Award Japanese Researcher Receives Award for Development of Ceramic Laser Material (开辟激光陶瓷新领域) Dr. Akio Ikesue was presented with the 2008 Award for his pioneering work in the field of optically transparent polycrystalline ceramics, with which he created the field of polycrystalline ceramic lasers. For many years, his name has been inseparably linked to the fabrication of novel ceramic laser materials. In 1995, he achieved laser performances close to those of mono crystals. This sparked off intensive research and development activities that have resulted in new ceramic technologies and a broad scope of applications for the materials produced using this sophisticated procedure. The results of Dr. Ikesues research have been published in renowned technical magazines. His ideas have met with broad acceptance and are now being put to use in laboratories all over the world. The Japanese scientist is currently a regular visiting lecturer at distinguished conferences on lasers, materials and ceramics. Only recently, he was selected by the U.S. Government to become the first project head from Asia to develop ceramic materials for producing megawatt laser performances. At present, Akio Ikesue has 15 patents. He founded his own company, World Lab.Co. Ltd., in Nagoya, and is an Invited Professor at the Universit Pierre et Marie Curie in Paris. The Otto Schott Research Award and the Carl Zeiss Research Award are conferred on an alternating annual basis to honor out-standing scientific performance and to motivate and promote the cooperation between science and industry. Both research awards are managed by the Stifterverband, a German research organiza-tion that offers the award on an international basis, in line with the international presence of the two groups, SCHOTT AG and CARL ZEISS AG. Among the past award winners are physicians and chemists from Germany, as well as scientists from various Euro-pean countries, the United States, Russia, Japan and China. The Japanese scientist Dr. Akio Ikesue (2nd from left), Dr. Hans-Joachim Konz (2nd from right), member of the Board of Management at SCHOTT and Chairman of the Board of Trustees of the Ernst Abbe Fund, also bids farewell to Professor Gerd Mueller (right) and Prof. Donald Uhlmann (left), two individuals who have served as members of the Board of Trustees for many years. 11 of the 20 previous recipients of the Otto-Schott- Research Award were present at this years 10th Otto Schott Research ceremony. Our photo presents also the award winner 2008, Dr. Akio Ikesue (3rd of right), Dr. Hans-Joachim Konz (3nd from left), member of the Board of Management at SCHOTT and Chairman of the Board of Trustees of the Ernst Abbe Fund, and Professor Gerd Mueller (right) and Prof. Donald Uhlmann (left), members of the Board of Trustees for many years 本文引用地址: http://www.schott.com/english/news/press.html?NID=2427
2008 年 11 月 11 日 ,也就是今天,期待已久的第四届国际激光陶瓷会议( LCS2008 )终于召开了。 LCS 2008 是和 The 9th International Symposium on Ceramic Materials and Components for Energy and Environmental Applications ( 2008CMCEE )同时在上海国际会议中心召开的 , 2008CMCEE 的大会主席是著名陶瓷专家江东亮院士, Plenary Speakers 是中科院副院长李静海研究员, GE 全球研发中心的 Dr. Krishan Luthra 和 Robert Bosch GmbH 的 Robert Bosch GmbH 。他们报告的题目分别是 Meso-scale structure- a common challenge of chemical engineering 、 SiC/SiC composites for gas turbine application 、 Functional ceramics for eission control strategies 。因为我对这些研究内容不是很熟悉,所以我不多做评价。结束了上午的开幕式及大会报告后,与会者到海鸥餐厅吃自助餐。吃饭的时候碰到了台湾大学的段维新教授、 NIMS 的 Badon 教授、 Sakka 教授、解荣军研究员以及韩国学者李世熏和李镇石博士。 下午便正式开始激光陶瓷的讨论,因为本人明天要做报告,今天先开个头,重头戏在后头,敬请期待。。。。。。 大会主席江东亮 院士致开幕词 罗宏杰所长致欢迎词 中科院副院长李静海研究员的大会报告