Frequency Combs

Frequency combs are finely tuned mode locked lasers used for highest accuracy optical applications measuring the frequency of light. They provide the unique capability of being both spatially coherent and broadband.

A frequency comb optical spectrum consists of lines at equal distance in the frequency domain which can reference unknown frequencies or stabilize a laser. Frequency combs facilitate the most precise optical clocks and are the heart of the Dual Comb Spectroscopy method which utilizes two coherent laser sources with equally spaced, discrete frequency lines, a system that successfully rivals Fourier transform infrared spectroscopy (FTIR).

Vescent manufactures the FFC-100 fiber frequency comb, a fully stabilized, octave-spanning frequency comb that delivers precise control over the repetition rate (ƒrep), optical frequency (ƒopt), and the carrier envelope offset frequency (ƒceo).  It is built around the Vescent MLL-100 Mode-Locked Laser, a stand-alone erbium-based femtosecond master oscillator power amplifier (MOPA). A highly non-linear fiber broadens the spectrum and our unique carrier envelope offset frequency lock detection reduces the size, weight, and power of the system. The complete frequency comb is designed and built to ensure stable, low-phase noise operation with Allan Deviations supporting the next generation of optical atomic clocks. The unique oscillator design also makes it easy to precisely factory match the repetition rate of two (or more) frequency combs for multi-comb spectroscopy applications. 

Vescent are leading manufacturers for frequency comb spectroscopy equipment offering compact, fieldable frequency combs based on Telcordia components for field deployment durability.