Application
An optical spectrum, measured on a single photodetector
Interfering two frequency combs with slightly different repetition rates down-converts an optical spectrum into the radio-frequency domain, where one fast photodetector reads it. The result is high resolution across a broad band without a dispersive element and without anything that moves.
What it changes
- Resolution is set by the comb line spacing rather than by the size of a grating.
- Acquisition is fast enough to follow transient events rather than average them away.
- The frequency axis is inherently calibrated by the comb itself.
- A shared-cavity architecture supplies mutual coherence passively, without a locking loop to tune or lose.
Building a dual-comb measurement?
Paeonia represents K2 Photonics across Asia. Tell us the band, the resolution and the acquisition rate you need.