Designing Next-Generation Optical Antennas
March 13, 2019 | University of Notre DameEstimated reading time: 1 minute
Antennas catch radio waves, a form of electromagnetic radiation, from the air and convert the energy into electrical signals that feed modern telecommunications. They can also convert electrical signals into radio waves. Without antennas, the world would be a much different place than it is today. Optical engineers and scientists like Anthony J. Hoffman, associate professor in the Department of Electrical Engineering at the University of Notre Dame, are working toward leveraging these devices to control light instead of radio waves.
Hoffman has been focusing his efforts on next-generation materials, technologies and devices for infrared light. Most often associated with night vision, infrared light has many uses in optical sensing and detection. Optical antennas enable engineers to control how light interacts with materials and can localize light to subwavelength dimensions for use with many of today’s nanoscale devices.
The paper titled “Monochromatic Multimode Antennas on Epsilon-Near-Zero Materials” that Hoffman and his team recently published in Advanced Optical Materials describes a special class of optical materials that can drastically alter the properties of optical antennas. This “control” of properties opens the door for new ways to engineer optical antennas.
Hoffman and his co-authors — Kaijun Feng, Junchi Lu and Owen Dominguez, all graduate students in electrical engineering at Notre Dame, along with Daniel Wasserman, associate professor of electrical and computer engineering, and graduate student Leland Nordin, both of the University of Texas at Austin — worked largely in two campus facilities (the Notre Dame Nanofabrication Facility and the Notre Dame Integrated Imaging Facility) to design, fabricate and demonstrate optical antennas using an epsilon-near-zero (ENZ) material.
Enzmaterial
ENZ materials offer unique phenomena, including wavefront engineering, enhanced light funneling through subwavelength apertures, order-of-magnitude extension of the local wavelength in waveguiding structures, and spectrally-selective absorption and thermal emissions. Building optical antennas on an ENZ material allowed the team to design and demonstrate a multimode, nearly monochromatic antenna, a new class of optical antennas, that could have use in sensing, imaging, infrared optoelectronics and thermal emission control applications. It also offers the potential of new types of optical devices.
Hoffman, an affiliated member of the Center for Nano Science and Technology, and his team are currently working to incorporate their optical antennas into semiconductor devices in order to improve the interaction between light and semiconductor materials, thus creating the next generation of infrared sources.
Suggested Items
LQDX Divests Aluminum Soldering Business - Mina™ - to Taiyo America Inc.
05/02/2024 | PRNewswireLQDX, formerly known as Averatek Corp., developer of high-performance materials for advanced semiconductor manufacturing, today announced that it has divested its aluminum soldering business – known as MinaTM – to Taiyo America Inc., a global market leader in advanced electronic materials.
Indium Corporation Expert to Present on Pb-Free Solder for Die-Attach in Discrete Power Applications
04/30/2024 | Indium CorporationIndium Corporation Product Manager – Semiconductor Dean Payne will present at the Advanced Packaging for Power Electronics conference, hosted by IMAPS, held May 8-9 in Woburn, Massachusetts, USA.
Real Time with... IPC APEX EXPO 2024: Adhesive Materials and Equipment Update with Dymax
05/01/2024 | Real Time with...IPC APEX EXPOVirginia Hogan, global business development manager at Dymax, discusses adhesive materials, dispensing and curing equipment, a new, high-reliability conformal coating, and various materials and dispensing methods.
Real Time with... IPC APEX EXPO 2024: Sustainability in the Industry
04/26/2024 | Real Time with...IPC APEX EXPOGuest Editor Henry Crandall and Chris Nash of Indium Corporation discuss the company's 90th anniversary and its focus on sustainability. They focus on the benefits of sustainable materials, their compatibility, and value propositions. The conversation also highlights how Durafuse LT technology's role in reducing reflow temperatures is leading to significant cost and energy savings. Nash also touches on downstream sustainability efforts such as using recycled materials for packaging.
SMC Korea 2024 to Highlight Semiconductor Materials Trends and Innovations on Industry’s Path to $1 Trillion
04/24/2024 | SEMIWith Korea a major consumer of semiconductor materials and advanced materials a key driver of innovation on the industry’s path to $1 trillion, industry leaders and experts will gather at SMC (Strategic Materials Conference) Korea 2024 on May 29 at the Suwon Convention Center in Gyeonggi-do, South Korea to provide insights into the latest materials developments and trends. Registration is open.