Content for SPIE.Edu

SPIE.Edu

SPIE (formerly the Society of Photographic Instrumentation Engineers, later the Society of Photo-Optical Instrumentation Engineers) is an international not-for-profit professional society for optics and photonics technology, founded in 1955. It organizes technical conferences, trade exhibitions, and continuing education programs for researchers and developers in the light-based fields of physics, including: optics, photonics, and imaging engineering. The society publishes peer-reviewed scientific journals, conference proceedings, monographs, tutorial texts, field guides, and reference volumes in print and online. SPIE is especially well-known for Photonics West, one of the laser and photonics industry's largest combined conferences and tradeshows which is held annually in San Francisco. SPIE also participates as partners in leading educational initiatives, and in 2020, for example, provided more than $5.8 million in support of optics education and outreach programs around the world.

Kernel Flow: a wearable device for noninvasive optical brain imaging

“A new wearable helmet-shaped device monitors brain activity Recent advances in brain imaging techniques facilitate accurate, high-resolution observations of the brain and its functions. For example, functional near-infrared spectroscopy (fNIRS) is a widely used noninvasive imaging technique that employs near-infrared …

A superconducting silicon-photonic chip for quantum communication

“Researchers resolve a long-standing challenge in quantum optics: optimal Bell-state measurement of time-bin encoded qubits, to enhance the key rate of secure quantum communication Integrated quantum photonics (IQP) is a promising platform for realizing scalable and practical quantum information processing …

Broadband spintronic-metasurface terahertz emitters with tunable chirality

“Metasurface-tailored spintronic terahertz emitters allow efficient, flexible generation and manipulation of chiral terahertz waves. Terahertz radiation, between infrared and microwave radiation in the electromagnetic spectrum, possesses unique advantages for fundamental studies and practical applications. The ability to generate and manipulate …

Generating entangled photons with nonlinear metasurfaces

“A new method for generating quantum-entangled photon pairs employs nonlinear metasurfaces to enhance and tailor photon emissions—an important step towards creating miniaturized quantum devices for everyday applications Quantum nanophotonics is an active research field with emerging applications that range …

5D imaging of ultrafast phenomena

“Spectral-volumetric compressed ultrafast photography simultaneously captures 5D information in a single snapshot Information-rich optical imaging can provide multidimensional information to enable observation and analysis of a detected target, contributing insights into mysterious and unknown worlds. With its ability to capture …

Near-field routing of hyperbolic metamaterials

“Flexible control of the propagating direction of near-field light can be realized with hyperbolic metamaterials, using an all-electric metasource Near-field light is invisible light at the subwavelength scale. Harnessed for a variety of practical applications, such as wireless power transfer …

Graphene microbubbles make perfect lenses

“New method generates precisely controlled graphene microbubbles with perfectly spherical curvature for lenses Tiny bubbles can solve large problems. Microbubbles—around 1-50 micrometers in diameter—have widespread applications. They’re used for drug delivery, membrane cleaning, biofilm control, and water …

All-optical method sets record for ultrafast high-spatial-resolution imaging: 15 trillion frames per second

“New all-optical imaging technique with an unprecedented frame rate allows scientists to visualize ultrafast transient phenomena High-speed cameras can take pictures in quick succession. This makes them useful for visualizing ultrafast dynamic phenomena, such as femtosecond laser ablation for precise …

Remembrance of waves past: memory imprints motion on scattered waves

“Between relativistic and classical wave regimes, newly discovered memory effect alters the Doppler wave signature Wave scattering appears practically everywhere in everyday life—from conversations across rooms, to ocean waves breaking on a shore, from colorful sunsets, to radar waves …

Nanodots made of photovoltaic material support waveguide modes

“New spectroscopic technique for studying nanostructures demonstrates that stibnite nanodots can act as high-optical-quality waveguides and are promising candidates as photoswitchable materials for future applications Antimony sulfide, or stibnite (Sb2S3), has been investigated intensively in recent years as a promising …

Liquid crystal integrated metalens for versatile color focus

“Researchers integrated photo-patterned liquid crystal into a dielectric metasurface to achieve achromatic and chromatic focusing with a single metalens. The development of metasurfaces opened a horizon for the advance of planar optics. Among various metadevices, the metalens has attracted widespread …

Quantum body scanner? What happens when vector vortex beams meet scattering media

“A comprehensive analysis of vector vortex beam transmission through scattering media offers insights into the behavior of light carrying orbital angular momentum Propagate light through any kind of medium – be it free space or biological tissue – and light will scatter …

Optical addressing method for full-color 3D display

“In volumetric displays, 3D images are rendered directly onto a physical volumetric space.1–3 These images can then be viewed by observers without the need for any additional devices. The application space for displays such as these includes 3D …