We present line-spacing frequency control of a microresonator-based optical frequency comb by way of mechanical actuation. Using this novel technique we have achieved a record level of residual stability in the line spacing of 5 × 10-15 for 1s averaging. This demonstrates the potential of microresonator combs to support clocks with stability derived from optical frequencies. This work has been performed with newly developed microrod optical resonators fabricated by use of CO2-laser machining.
Proceedings Title: Proceedings of 2012 IEEE Frequency Control Symposium
Conference Dates: May 21-24, 2012
Conference Location: Baltimore, MD
Conference Title: 2012 IEEE Frequency Control Symposium
Pub Type: Conferences
Frequency comb, frequency stabilization, optical clock