RUBRIComb Frequency Comb

RUBRIComb®, proper noun, 'rü-bri-kōm

A reference, a frequency ruler for precision measurements, a standard for turnkey and reliable optical frequency combs.

Optical frequency combs provide a precise and traceable link between optical and microwave frequencies, enabling the measurement of absolute optical frequencies with exceptional accuracy. By stabilizing tunable lasers to a frequency comb, researchers can maintain laser frequencies at well-defined values, such as those required to address specific transitions in vapor cell, cold atomic, or ionic systems. This technique delivers a robust, scalable foundation for managing the growing complexity of optical and quantum technology platforms.

You want an optical frequency comb that keeps your experiment or in-the-field solution running smoothly and efficiently. Frequency combs have a reputation for being complicated instruments that cause downtime at the worst times—that era has now ended with the RUBRIComb®. Redefine reliability with a laser that never lets you down.

RUBRIComb® Leading Application Solutions:

• Atomic Clocks and Time Transfer
• Quantum Computing
• Dual Comb Spectroscopy

The RUBRIComb® from Vescent is a fully stabilized optical frequency comb with precise control over the repetition rate (ƒ_rep), the carrier-envelope offset frequency (ƒ_CEO), and the optical reference beat (ƒ_opt). At its core is a passively mode-locked erbium-doped fiber oscillator. Our unique approach reduces the system size, weight, and power (SWaP). The complete RUBRIComb® 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 entire laser, including self and external referencing modules, is contained in a single 2U 19” rack mount chassis. The laser mode-locks at startup every time and is specially designed for a robust, long life. Our unique oscillator design also makes it easy to precisely factory-match the repetition rate of several RUBRIComb® combs for multi-comb spectroscopy experiments.

US Patent 11,462,881

Transferring the Long-Term Stability of a GPS-Disciplined OCXO to Vescent’s RUBRIComb-100 Optical Frequency Comb by Repetition Rate Locking

We demonstrate a straightforward method of locking Vescent’s fiber frequency comb (RUBRIComb-100) repetition rate to any user-supplied RF oscillator. See the case study

Locking a RIO PLANEX Laser to the Vescent RUBRIComb-100 Fiber Frequency Comb

The fiber frequency comb is a tool with incredible versatility. One application is the use of a comb to transfer the stability of one CW laser to another with a frequency difference which lies outside the bandwidth of typical photodetectors. Download the white paper

What happens when you throw a weak laser into a frequency comb?

A team from the Joint Quantum Institute, the University of Maryland, the National Institute of Standards and Technology (NIST), and the Laboratory for Physical Sciences has designed and built brighter on-chip optical frequency combs using dissipative Kerr solitons. See the article

On-Chip Frequency Combs and the Possibilities for Nonlinear Optics, Sensing, and Quantum Computing

Learn how an on-chip electro-optic frequency comb, based on a coupled-resonator platform on thin-film lithium niobate, acts as an on-chip femtosecond pulse source, making it promising for nonlinear optics, sensing, and quantum computing. See the article

In the Media

RUBRIComb® featured in Laser Focus World

Video: Low SWaP-C Dual Frequency Combs for Time & Frequency Transfer

Vescent proposes that frequency combs will develop the next generation of atomic clocks used in position, navigation, and timing. Point of Contact: Dr Kevin Knabe, Head of Research and Development at Vescent. See the video