A new Stanford-designed optical amplifier uses energy recycling in a resonator to deliver strong, low-noise amplification with far less power.

Light does a lot of work in the modern world, enabling all types of information technology, from TVs to satellites to fiber-optic cables that carry the internet across oceans. Stanford physicists ...

Close up of an optical amplifier chip, similar to the one detailed in this study, that is being developed in the lab of Stanford physicist Amir Safavi-Naeini. A red laser light shines from an optical ...