Lasers make magnets behave like fluids

For years, researchers have pursued a strange phenomenon: When you hit an ultra-thin magnet with a laser, it suddenly de-magnetizes. Imagine the magnet on your refrigerator falling off. Continue reading “Lasers make magnets behave like fluids”

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High-performance quantum dot mode-locked laser on silicon

Ten years into the future. That’s about how far UC Santa Barbara electrical and computer engineering professor John Bowers and his research team are reaching with the recent development of their mode-locked quantum dot lasers on silicon. It’s technology that not only can massively increase the data transmission capacity of data centers, telecommunications companies and network hardware products to come, but do so with high stability, low noise and the energy efficiency of silicon photonics. Continue reading “High-performance quantum dot mode-locked laser on silicon”

Laser blasting antimatter into existence

Antimatter is an exotic material that vaporizes when it contacts regular matter. If you hit an antimatter baseball with a bat made of regular matter, it would explode in a burst of light. It is rare to find antimatter on Earth, but it is believed to exist in the furthest reaches of the universe. Amazingly, antimatter can be created out of thin air — scientists can create blasts of matter and antimatter simultaneously using light that is extremely energetic. Continue reading “Laser blasting antimatter into existence”

Modern laser science brightened by 2,300-year-old technology

An active field of research, laser optical trapping works to control the movement and position of particles of different sizes and shapes. The ability to move small particles in a precise and controlled manner is important to both basic and applied science. For example, the ability to control the movement of single atoms can be used to realize quantum computing, and the research also contributes to the study of biological specimens and pollutants. Continue reading “Modern laser science brightened by 2,300-year-old technology”

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