Shuji Nakamura, University of California Santa Barbara, USA
The Invention of High Efficient Blue LEDs and Future Lighting
In 1970's and 80’s, an efficient blue and green light-emitting diodes (LED) were the last missing elements for solid-state display and lighting technologies due to the lack of suitable materials. By that time, III-nitride alloys was regarded the least possible candidate due to various "impossible" difficulties. However, a series of unexpected breakthroughs in 1990's totally changed people's view angle. Finally, the first high efficient blue LEDs were invented and commercialized at the same time of 1993. Nowadays, III-nitride-based LEDs have become the most widely used light source in many applications. The LED light bulbs are more than ten times efficient than incandescent bulb, and they last for 50 years! At their current adoption rates, by 2020, LEDs can reduce the world’s need for electricity by the equivalent of nearly 60 nuclear power plants.
Shuji Nakamura is from Ehime, Japan. He obtained his B.E., M.S., and Ph.D. degrees in Electrical Engineering from the Univ. of Tokushima, Japan. He joined Nichia Chemical Industries Ltd. in 1979. He spent a year at the Univ. of Florida as a visiting research associate in 1988, and started the research of blue LEDs using group-III nitride materials the following year. In 1993 and 1995, he developed the first group-III nitride-based blue/green LEDs. He also developed the first group-III nitride-based violet laser diodes (LDs) in 1995. He has received a number of awards, including the MRS Medal Award (1997), the IEEE Jack A. Morton Award, the British Rank Prize (1998) and the Benjamin Franklin Medal Award (2002). He was elected as a member of the US National Academy of Engineering (NAE) in 2003, received the Finnish Millennium Technology Prize in 2006, the Prince of Asturias Award from Spain in 2008, the Harvey Prize of Israel Inst. of Technology in 2010, and the Nobel Prize in Physics in 2014. Since 2000, he is a professor in the Materials Department of the Univ. of California Santa Barbara. He holds more than 200 patents and has published more than 400 papers in this field.
Jérôme Faist, ETH Zurich, Switzerland
Fourier Transform Spectroscopy (FTS)
Quantum-cascade Laser Frequency Combs and Their Application to Dual-comb Spectroscopy
Quantum cascade lasers have recently demonstrated the capability of operating as optical frequency combs in the mid-infrared and terahertz with high optical power (>100mW). Self-detected dual comb operation and dual-comb spectroscopy were recently demonstrated.
: Jérôme Faist was born in Geneva, and obtained his Bachelor and Ph.D. in Physics, in the group of Prof. F.-K Reinhart from the Swiss Institute of Technology in Lausanne in 1985, 1989 respectively. After a post-doc in IBM Rueschlikon (89-91), he joined F. Capasso's group in Bell Laboratories in 1991 where he worked first as a post-doc and then as a Member of Technical Staff. From 1997 to 2007, he was professor in the physics institute of the University of Neuchâtel. In 2007, he became professor in the institute for quantum electronics of the ETH Zurich.
His central role in the invention and first demonstration of the quantum cascade (QC) laser in 1994 was recognised by the IEE premium (1995), the IEEE/LEOS William Streifer award (1998), the Michael Lunn award (1999), the ISCS "Young scientist award" (1999), and the Swiss National Latsis Prize (2003). His present interests are the development of high performance QC lasers in the Mid and Far-infrared and the physics of coherence in intersubband transitions in the presence of strong magnetic fields.
Stephen Tjemkes, EUMETSAT, Germany
Hyperspectral Imaging and Sounding of the Environment (HISE)
Mtg-irs: The Instrument, Its Products and Current User Readiness Activities
This paper gives an overview of the Infrared Sounder mission, its planned products and the current activities to prepare the envisaged user community for the MTG-IRS era.
Michael Hardesty, University of Colorado/NOAA, USA
Optics and Photonics for Energy & the Environment (E2)
Lidar Techniques and Applications for Improving Wind Energy Production and Characterizing Pollution from Fossil Fuel-Based Energy Generation
This paper describes the use of Doppler and differential absorption lidar (DIAL) remote sensing techniques to enhance wind energy production and investigate air pollution and greenhouse gas emissions from burning of fossil fuel.
R. Michael Hardesty is a Senior Research Scientist and Associate Director for Environmental Observations, Modeling and Forecasting with the Cooperative Institute for Research in Environmental Sciences at the University of Colorado Boulder. His current research interests are focused on the development and application of lidar techniques for investigating dynamical and chemical processes in the atmosphere. Prior to joining CIRES, he was Program Leader for Optical Remote Sensing for the National Oceanic and Atmospheric Administration (NOAA) in Boulder. Over the course of his career he has worked to advance technology and demonstrate use of lidar to measure winds, turbulence and transport from boundary layer to global scales. He is currently co-chair of the US Working Group on Space-Based Lidar Winds and serves as a US Observer to the European Space Agency’s Aeolus Mission Advisory Group. Michael is a Fellow of the Optical Society of America and the American Meteorological Society.
Pietro Altermatt, Trina Solar Limited, China
Optical Properties of Industrially Mass-produced Crystalline Silicon Solar Cells and Prospects for Improvements
- Optical Nanostructures and Advanced Materials for Photovoltaics (PV)
The optical properties of mass-produced crystalline Si solar cells are reviewed and the requirements and constraints for their improvements by modern optical methods are outlined from the perspective of one of the largest manufacturers.
Pietro P. Altermatt’s main area of research has been the development of physical models for the numerical simulation of crystalline silicon solar cells and testing devices. Of equal interest to him is the application of these models to simulation strategies tailored to research, development and mass production. When Pietro worked at UNSW from 1993 until 2002, the UNSW high-efficiency cells were ideally suited for setting up generally valid physical models, because they suffered from very few non-ideal losses. When Pietro set up a modelling group at the Leibniz University Hannover (Germany) in 2005, the models were extended to industrially fabricated solar cells, working in close collaboration with the industry. Now, such simulations form the quantitative basis for improvement strategies in the PV industry, predicting the optimum device design, the necessary production equipment, and the feasible silicon material.
Christian Sattler, German Aerospace Center, Germany
Optics for Solar Energy (SOLAR)
Solar Fuels: Specific Requirements for Solar Concentrator Systems
The production of fuels by concentrated solar radiation is an option for efficient large scale processes. The radiation can either be used to replace fossil fuels for heating established processes like steam or dry reforming of methane. Or at higher temperature to drive thermochemical cycles for water or CO2
splitting into hydrogen, oxygen and CO. Presently most of the technologies are developed with high flux solar simulators. However some scale-up demonstrations on solar towers have been operated. The concentrator systems, mainly heliostat fields, are similar to installations for power production. However the chemical reactions require a different heating regime. Therefore a special optics and control systems have to be developed to achieve the very high temperatures necessary to carry out thermochemical cycles constantly and homogeneously in the whole solar receiver. The presentation will give an overview of the concentrating solar fuel production processes. It will give insight in how to design the required heliostat fields, secondary optics, and control systems.
Prof. Dr. Christian Sattler is head of the Department of Solar Chemical Engineering of the German Aerospace Center’s Institute of Solar Research
. He is also professor for solar fuel production at the Technical University of Dresden. The main area of his work is the production of fuels especially hydrogen by solar thermo- and photochemical processes. He serves as vice president of the research association N.ERGHY
a member of the European Joint Technology Initiative for Fuel Cells and Hydrogen and is the national representative to tasks of the IEA’s SolarPACES and Hydrogen Implementing Agreements.
Klaus Streubel, Osram Licht AG
Solid-State Lighting (SSL)
Solid State Lighting: Opportunities and Challenges
LEDs have become the dominating light source in many applications such as mobile devices, displays or laptop computers. They also play a significant role in the area of general lighting. In this presentation we will discuss the success stories of LEDs in lighting, the challenges and the opportunities in future solid state lighting systems.
As Senior Vice President and head of Corporate Innovation of Osram Licht AG in Munich, Dr. Klaus Streubel is responsible for the global research and pre-development activities in the company. Klaus has held a position as head of Corporate Innovation at Osram since August 2009.
Dr. Streubel spent two years as a post doc at the Swedish Institute of Microelectronics in Stockholm, and began his professional career in 1993 when he took a permanent position at the Royal Institute of Technology (KTH) in Stockholm, where he received a lecturer certificate and was appointed as adjunct professor. In 1997, he moved from academic to industrial research and joined Mitel Semiconductors in Järfälla, Sweden, and in 1999 Osram Opto Semiconductors in Regensburg, Germany.