New approaches to obtaining diffraction-limited beams from large-mode-area fibres point to unprecedented ruggedness and output powers. Breck Hitz investigates. At the turn of the century virtually ...

Australian researchers design an optical fiber that focuses light in the far field without using lenses. Researchers in Australia have designed an air-silica optical fiber that overcomes free-space ...

We have measured the helical parameters of DNA in concentrated solutions by x-ray fiber diffraction methods. Fibers of the sodium salt of DNA were swollen with water within capillaries; the capillary ...