Atoms are prepared (magnetically trapped) in a particular internal quantum state |1〉 (Fig. 1a). The atom cloud is first illuminated by a coupling laser, resonant with the |2〉–|3〉 transition. With only ...

Yale scientists have uses acoustic waves to amplify light in a new type of silicon laser for photonic ICs, side-stepping the problem of silicon’s indirect bandgap. “Silicon’s intrinsic properties, ...

Electron and phonon are two fundamental particles (quasi-particles) of condensed matter and their interplay in single crystals can create many interesting physical phenomena, such as polariton, charge ...

Two independent teams of physicists have overcome the restless nature of light and stopped laser pulses in their tracks. A proposed method, now in tests by a third team, may even make light pulses ...

It’s a rare person who can pick up a cheap laser pointer and not wield it like a lightsaber or a phaser, complete with sound effects. There’s just something about the “pew-pew” factor that makes ...

The FISBA RGBeam light engine precisely couples three wavelengths. It can be used directly or carried to the customer’s application through a multimode-fiber. The possible applications are many and ...

Researchers have found a new mechanism that fundamentally alters the interaction between optically levitated nanoparticles. Their experiment demonstrates previously unattainable levels of control over ...

The ability to stop light in its tracks by passing it through a cloud of ultracold atoms could lead to new techniques for optical storage Slow coach: Lene Hau with the laser system that her group uses ...

Shining lasers on a gas containing two isotopes of the same element, Athos Kasapi of Stanford University has made one isotope highly transparent to the laser light while causing the other to become ...