Latest Federico Capasso Stories
Harvard School of Engineering and Applied Sciences At a time when communication networks are scrambling for ways to transmit more data over limited bandwidth, a type of twisted light wave is gaining new attention. Called an optical vortex or vortex beam, this complex beam resembles a corkscrew, with waves that rotate as they travel. Now, applied physicists at the Harvard School of Engineering and Applied Sciences (SEAS) have created a new device that enables a conventional optical...
For centuries it was thought that thin-film interference effects, such as those that cause oily pavements to reflect a rainbow of swirling colors, could not occur in opaque materials.
Harvard researchers create a light wave that propagates without spreading
Ultrathin wafer of silicon and gold focuses telecom wavelengths without distortion
Exploiting a novel technique called phase discontinuity, researchers at the Harvard School of Engineering and Applied Sciences (SEAS) have induced light rays to behave in a way that defies the centuries-old laws of reflection and refraction.
Breakthrough elliptical cavity enables a wide range of applications in photonics.
Advance in metamaterials leads to a new semiconductor laser suitable for security screening, chemical sensing and astronomy.
Scalable devices inspired by nature exhibit customizable optical properties suitable for applications ranging from highly sensitive sensors and detectors to invisibility cloaks.
Self-assembly method yields materials with unique optical properties.
Adaptable technology opens the door to a wide range of applications in chemical detection, climate monitoring and communications.
- In medieval musical notation, a sign or neume denoting a shake or trill.