Building a more versatile frequency comb: Newly developed frequency combs can operate at higher power

Researchers have developed a room temperature frequency comb with increased power based on quantum cascade lasers. Since the discovery of optical frequency combs in the 1990s, many applications in metrology, spectroscopy, and frequency synthesis have emerged. Similar to the way a grandfather clock's pendulum ticks off the seconds before signaling the gears to turn its hands, frequency combs count oscillations and convert them into useful electronic signals.

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