#New design for ‘optical ruler’ could revolutionize clocks, telescopes, telecommunications
“#New design for ‘optical ruler’ could revolutionize clocks, telescopes, telecommunications” Experimental setup to generate a set of stable frequencies in a cryogenically cooled laser microresonator frequency comb. The ring-shaped microresonator, small enough to fit on a microchip, operates at very low laser power and is made from the semiconductor aluminum gallium arsenide. Credit: NIST Just…