A Groundbreaking Achievement in Laser Technology

Researchers at NPL have made a stunning leap forward in laser frequency stabilization, unveiling results that boast unprecedented performance through an innovative optical reference cavity. This advancement introduces a remarkable storage time that surpasses existing benchmarks while effectively neutralizing disruptive noise in the stabilization process.

Record-Setting Optical Reference Cavity Length

The standout feature of this breakthrough is a phenomenal 68 cm-long optical reference cavity, allowing an impressive optical storage time of 300 microseconds. To visualize this achievement, consider that light bouncing within this cavity can travel up to 100 kilometers—twice the length of the iconic Eurotunnel!

Tackling Technical Noise Like Never Before

Taking it a step further, the team confronted the challenge of spurious stabilization noise head-on. They successfully introduced a novel technique to counteract Residual Amplitude Modulation (RAM), a pesky source of technical noise linked to the essential phase modulation process during stabilization.

A Game Changer for Optical Clocks and Beyond

This innovative research stands to revolutionize the stability of lasers, dramatically enhancing the performance of next-generation optical clocks—an evolution in atomic clocks that rely on optical transitions. The implications stretch across a myriad of fields, including precise timekeeping, navigation systems, telecommunications, and fundamental scientific exploration.

A Bright Future for Technology and Science

The findings highlight a promising era of heightened measurement capabilities that could drive significant progress in both technology and scientific inquiry. Marco Schioppo, the principal scientist, expressed enthusiasm about sharing these results, stating, "We are excited to present these advancements which will enable the continuous development of superior lasers. Cavity-stabilized lasers are vital tools in high-precision time and frequency measurement, ensuring our work impacts numerous technological applications and scientific endeavors."

Addressing Challenges in Frequency Stabilization

Adam L. Parke, an assistant scientist, echoed the excitement, stating, "Working on controlling residual amplitude modulation has been a fascinating challenge. This improvement in noise management can significantly enhance frequency stabilization and open doors for future innovations."