Using a diamond crystal measuring just a few millimeters across in a carefully designed cavity, they tested a deliberately "noisy" input beam with linewidth exceeding 10 MHz. Their Raman scattering ...

Macquarie University researchers have demonstrated a technique to dramatically narrow the linewidth of a laser beam by a factor of over ten thousand – a discovery that could revolutionise quantum ...

Laser self-mixing interferometry (SMI) harnesses the phenomenon of optical feedback by reinjecting a fraction of a laser’s output back into its cavity. This reinjection leads to an interference effect ...

Data from a recent integrated ground test of the Alpha high-energy laser, its beam director telescope and the associated beam alignment and correction system have provided the team developing the ...

Physicists have built a tractor beam out of lasers that can both repel and attract objects across distances 100 times farther than previously possible. Michelle Starr is CNET's science editor, and she ...