Laser tool breakthrough shrinks frequency combs to chip size

Researchers in New Zealand and the US have found a way to miniaturize optical frequency combs—the ultra-precise laser tools behind atomic clocks and quantum tech—down to a chip. The team showed that two lasers an octave apart can generate these combs in a chip-scale device, performing all major comb functions. That could enable portable atomic clocks and advanced sensors outside the lab.

• Optical frequency combs cut to chip size
• Enables key measurement roles in a miniaturized form
• Developed by University of Auckland and US researchers
• Proof-of-concept completed for all main comb tasks
• Unlocks new paths for precision tech outside labs