Vernier microcombs for high-frequency carrier envelope offset and repetition rate detection
Abstract
Recent developments in Kerr microcombs may pave the way to a future with fully stabilized ultralow size, weight, and power consumption (SWaP) frequency combs. Nevertheless, Kerr microcombs are still hindered by a bandwidth/repetition rate trade-off. That is, the octave bandwidth needed for self-referencing is typically realized only with ∼THz repetition rates beyond the range of standard commercial photodetectors. The carrier envelope offset frequency is often likewise too high for detection. Dual-comb techniques for the measurement of THz repetition rates have made exciting progress, but the fCEO detection problem remains largely unaddressed. In this work, utilizing a Vernier dual-comb configuration, we demonstrate simultaneous detection of the electronically divided repetition rate and fCEO carrier envelope offset frequency of an octave-spanning microcomb. This, in turn, could help usher optical atomic clocks, low-noise microwave generators, and optical frequency synthesizers into various real-world applications.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 18, 2023
- Source ID
- 10.1364/optica.486755
Entities
People
- Andrew M. Weiner
- Cong Wang
- Daniel E Leaird
- Kaiyi Wu
- Marcello Girardi
- Minghao Qi
- Mohammed S Alshaykh
- Nathan P. O’Malley
- Saleha Fatema
- Victor Torres-Company
- Zhichao Ye
Organizations
- Air Force Office of Scientific Research
- Chalmers University of Technology
- Defense Advanced Research Projects Agency
- Indiana University
- King Saud University
- Purdue University
- Swedish Research Council
- Torch Technologies