"Needle-shaped laser beams can effectively extend the depth-of-focus of an OCT system, improving the lateral resolution, signal-to-noise ratio, contrast and image quality over a long depth range ...

Too high a current in one beam causes electrons to repel (Coulombic interactions) and blur the focus. Multi-beam systems sidestep this by using many lower-current beams in parallel, each maintaining a ...

A 16-beam system operating at a 3-millimeter wavelength observes carbon monoxide and other molecules. Larger multi-beam systems are installed on arrays in Australia and the Netherlands. John Wardle ...