Time & Frequency
Dual-reference approach for de-drifting an ultra-low-expansion cavity-stabilized laser
As atomic quantum computing and sensing demand higher operational fidelities, precise lasers are essential, maintaining fractional linewidth and frequency instability below a few parts in 100 trillion (~5×10-14). Ultra-low-expansion (ULE) cavity-stabilized lasers meet linewidth requirements but drift over time affects frequency stability. Traditional reliance on computing/sensing atoms for reference leads to downtime. We propose a dual-reference approach, where cavity-stabilized lasers sync with Vescent’s acetylene optical clock (LTS), reducing reliance on atomic corrections.
Vescent Brings Optical Clocks to the Market with DFM
Vescent and the Danish National Metrology Institute (DFM) announce a highly accurate user-configurable optical clock assembled entirely from their commercially available components achieving 200 femtoseconds (0.0000000000002) timing instabilities at one second and sub nanosecond holdover at one day. Using Vescent’s commercially available, market-leading optical frequency comb (OFC), the FFC-100, to down-convert the clock cycle to the RF and the wavelength-stabilized output of the DFM Stabilaser 1542e as the clock laser, this powerful combination of components (including the Vescent SLICE-FPGA-II) yields a “Box to Clock” in less than 30 minutes (including warm-up time for all three devices), which customers can purchase today in North America for an introductory price of US$199,500 with a current lead-time of 6 to 12 weeks. Vescent is the exclusive Distributor for the DFM Stabilaser 1542e in the US and Canada.
Introducing the FFC-100!
Learn about our Fiber Frequency Comb, the FFC-100!
A rugged, compact, all-fiber frequency comb, designed and built to provide frequency stability transferable to the SWIR, NIR, visible, and RF spectra.
Fully stabilizable, with fractional Modified Allan Deviation below 10-22, the FFC-100 serves PNT, low-phase noise microwave, field sensing, and quantum security & computing applications in the lab and in the field.
Integrated f(CEO) Phase Noise of 280 mrad RMS in a SESAM-based Frequency Comb Supporting a Fractional Frequency Instability of 1.3x10^(-17) at 1 s
Integrated f(CEO) Phase Noise of 280 mrad RMS in a SESAM-based Frequency Comb Supporting a Fractional Frequency Instability of 1.3x10^(-17) at 1 s
Transferring the Long-Term Stability of a GPS-Disciplined OCXO to Vescent’s FFC-100 Optical Frequency Comb by Repetition Rate Locking
Transferring the Long-Term Stability of a GPS-Disciplined OCXO to Vescent’s FFC-100 Optical Frequency Comb by Repetition Rate Locking
JILA Atomic Clocks
JILA Atomic Clocks Measure Einstein’s General Relativity at Millimeter Scale
