Frequency combs are spatially coherent and broadband
The FFC series of fiber frequency combs are finely tuned mode-locked lasers used for high-accuracy optical applications measuring light frequency. They are both spatially coherent and broadband. Models include the turnkey FFC-100-100 at 100 MHz and FFC-100-200 at 200 MHz, as well as the modular FFC-CM.
Vescent Photonics
Golden, CO