Photonics for a Better World

The photograph "Studying" by Handi Laksono captured in a home in Wae Rebo, Flores NTT, Indonesia, on  1 September 2014, is the People's Choice Award winner in the SPIE International Year of Light Photo Contest. A photo of a 5-year-old boy studying in a dark hut, with only natural morning light streaming through a small window, has been selected for the People's Choice Award in the SPIE International Year of Light Photo Contest. The contest was sponsored by SPIE Professional , the quarterly magazine of SPIE, the international society for optics and photonics, as part of the International Year of Light observance. SPIE is a Founding Partner. Captured by Javanese travel and landscape photographer Handi Laksono , the winning photo was taken after Laksono hiked three hours to the remote village of Wae Rebo on Flores Island in Indonesia. Wae Rebo's only lighting source is solar, either direct sunlight or a few small solar panels, Laksono said. He n...

Optical technologies and the people who work with them have brought tangible social, environmental, health, and economic gains to humanity. A prime example is the solar cooker, designed for sunny and dry climates. Varieties of these have provided thousands of people with alternative sources for cooking fuel. The top five countries with ideal solar cooking climates are India, China, Pakistan, Ethiopia, and Nigeria. In the photo above, Sandipan Mukherjee demonstrates the popular use of solar cookers in a remote village in Nubra Valley, India. Off the national power grid, Nubra Valley is tucked away in a high-altitude, cold desert between the Himalaya and Karakoram mountain ranges. Solar-based technology plays a crucial role inthe village. Although it can be bitterly cold in Turtuk during the winter, the area still receives strong sun rays. The three types of solar cookers are heat-trap boxes, curved concentrators, and panel cookers. The solar cooker shown above is a curved ...

The many properties of light have long provided inspiration for SPIE CEO Dr. Eugene Arthurs. Editor’s note: A green laser lighted the early career path of then-physics-graduate Eugene Arthurs, now CEO of SPIE, the international society for optics and photonics . Light from many sources continues to provide him with inspiration and direction, Dr. Arthurs writes in this blog post originally published in the International Year of Light blog, www.light2015blog.org . Looking back, my career path was not determined by some grand plan, but rather by the beauty of the light from an argon ion laser in our Applied Physics department at Queen’s University Belfast. It wasn’t the science that the laser was bought for, Raman spectroscopy, or an understanding of how the laser would change the world, that drew me. At the time I was soon to graduate with a physics degree – the first in my family history to get a science degree – and was interviewing with a local branch of IBM where my ...

This past weekend marked the conclusion of the 2013 Department of Energy Solar Decathlon, held in Irvine, California. It was the sixth time the DOE-sponsored event has been held in the United States, but the first time outside of Washington, DC. Besides the obvious benefits of exposure to a new audience, the contest made the best of the more dependable California sunshine, although there was some rain one day, and the first weekend was a challenge with hot temperatures and 50 mph Santa Ana winds. In any case each team was able to tally a full 100 points for the Energy Conversion part of the competition – meaning every house produced more energy than it consumed – for the first time ever. SPIE Newsroom and SPIE.TV spent some time in Irvine and focused on the technical aspects of some of the houses. We had an expert commentator to help – Adam Plesniak of Amonix, the concentrating PV company located in nearby Seal Beach. Adam’s view, and that of many others we encountered, is tha...

What better opportunity than Earth Day to point out another way that photonics plays a role in improving the planet? Awareness of the importance of taking care of the earth is becoming more widespread, and most importantly, not just in the affluent countries of the world. In fact, the developing nations are where some of the most innovative efforts are taking place. We've highlighted micro-solar projects in Africa and elsewhere, and the previous post about the LEDs being used to protect livestock from lions shows another brilliant but simple use of photonics. Here's one that combines solar energy and an expanding communications infrastructure in India. AirJaldi Networks, a company that provides solar-powered Wi-Fi for the rural masses, was plagued by the difficulty of maintaining power to its mobile phone towers in remote areas, especially during the monsoon season. Battery backups were expensive and frequently necessary. As GreenTech Solar reports : Here’s how it works: ...

In the face of recent comments by lawmakers and others in the public eye suggesting that accepting scientific evidence is akin to the decision to believe in a particular religion or political dogma, NPR commentator Adam Frank has suggested a clarifying solution. Congress, he said in a Cosmos & Culture post on 11 December , should consider making a pledge to science -- not to wholesale acceptance of all published research, but simply to “uphold the integrity of basic scientific research and take no actions to undermine the broadest public education in empirically verifiable scientific truths."  Volunteers from SPIE are among hundreds of scientists and engineers who visit Congressional offices every year to stress the contributions of STEM research to society and the economy. His underlying point that science and technology are “the engines of our economic competitiveness” echoes the words of leaders of 120 science, engineering, and STEM education organizat...

The manipulation of light is a core photonics activity performed in numerous ways for numerous practical effects. For example, consider the design of lasers for purposes as diverse as repairing a retina to restore vision and downloading a movie over the internet onto a tablet for viewing. Anatoly Zayats and his team at King's College London have created artificial "rainbows" at the nanoscale. The technology has potential for use in solar energy generation, optical computing, and more. Amazing as those human-scale applications are, imagine manipulating multiple colors of light on a structure about 100 times smaller than the width of a human hair -- and then applying that for the very practical effects of sensing toxins, improving solar cell efficiency, enabling optical circuits for tele- and data communications, and improving flat-screen display. A team of researchers led by Anatoly Zayats in the Biophysics and Nanotechnology Group at King’s College Lond...

"Light is at the origin of all of life," proponents of the declaration of 2015 as the International Year of Light (IYOL) told the UNESCO Executive Board last week. The board agreed at its meeting in Paris, giving its enthusiastic support to an international effort to recognize optics and photonics technologies through a year-long observance in 2015. The rainbow is expected to be the symbol for the International Year of Light. Although a final declaration by the UN General Assembly is not quite a done deal, the UNESCO support paves the way for a large-scale effort to raise awareness of the essential role light-based technologies play in driving industry and enhancing life. Why is awareness so important?. "The science and technology of light have revolutionized medicine, have opened up international communication via the Internet, and are central to linking cultural, economic and political aspects of global society," SPIE Fellow Paul Buah-Bass...

 Roger Angel's prototype solar module based in a spaceframe to continuously track the sun. Image © REhnu Sitting in a conference room, listening to Roger Angel (REhnu and College of Optical Sciences, University of Arizona) talk about how he is refocusing astronomical instrumentation to build highly efficient, cheaper solar cells, or watching Eva-Marie Sevick-Muraca (University of Texas Health Science Center at Houston) show the first-ever video of lymphatic flow inside a human being, or hearing Mario Paniccia (Intel) talk about the amazing advances in computing speed that are around the corner in silicon photonics … well, politics is perhaps not the first thing that comes to mind. But politics definitely does come to mind at some point, and most scientists recognize the importance of the relationship between the two spheres. Today’s endorsement by 68 Nobel Prize winners in science of the candidacy of President Barack Obama for re-election is one illustration. ...

Governments in Asia, Europe, North America, and elsewhere are finding new ways to prioritize their efforts to support optics technologies and industries and to advance their own national competitiveness and economic success. A recent article in the SPIE Professional magazine surveyed the latest developments around the world. This post shares some of the magazine's report on what is happening in Asia, where a major focus is on efficient energy. Future posts will focus on Europe and North America. Asian governments have taken varied approaches in their support of optics and photonics industries. Last year, the Chinese government announced the 12th iteration of its Five-Year Plan for National Economic and Social Development. The plan, which runs through 2015, includes a focus on the economic value of seven “strategic emerging industries.” Recent reports have estimated that the Chinese government will spend $1.5 trillion US on subsidies in the fields of biotechnology,...

Eco-metamaterials engineered by optics and photonics researchers can lighten our environmental footprint and just may be -- ironically -- more sustainable than materials found in nature. So say Nerac analysts Rosemarie Szostak and Michael Kapralos in their article in the July 2012 issue of SPIE Professional magazine. Metamaterials combine micro or nano structural features instead of relying on composition alone to achieve the desired properties. They have sparked the imagination of the optics and photonics community with their unusual characteristics, and researchers are developing unique metamaterials for their potential as invisibility cloaks, high-efficiency photovoltaics, super-antennas, and ultrabright LEDs. Eco-metamaterials may not yet be "green" based on their composition. However, the reduced quantities of materials, especially toxic ones, used in their development and metamaterials’ inherent potential for exotic properties allow technologists to...

Meeting the challenge of successfully converting research into innovation is a major goal of the European Commission's Horizon 2020 initiative, as Thierry Van der Pyl , Director of Components and Systems in the EC's Information Society and Media Directorate-General, discusses in this new SPIE. TV video interview . Organized to leverage the interdisciplinary nature of solutions to challenges in energy, lighting, communications, healthcare, manufacturing other areas, Horizon 2020 aims to improve Europe's ability to transform knowledge into applications that have an economic impact through the strength of public-private partnership, Van der Pyl says. Photonics is truly a vital part of the interdisciplinary mix, and well-deserving of its recognition by the EC as one of six Key Enabling Technologies. The June 2011 report of the High-Level Expert Group on Key Enabling Technologies estimated that the 5,000 photonics companies in the EU direct...