Affiliation:
1. California Institute of Technology
2. hQphotonics Inc.
3. Tsinghua University
4. Jet Propulsion Laboratory
Abstract
Temporal soliton mode locking in coherently pumped microcavities is a
promising route towards miniaturized frequency comb systems. However,
the power efficiency of the resulting microcombs is usually quite low.
Soliton generation by pulse pumping provides a way to increase
conversion efficiency (so far, as high as 8%). Here, we study
conversion efficiency and report a single-soliton conversion
efficiency as high as 54% using a scanning laser, as well as a
steady-state single-soliton conversion efficiency as high as 34%. We
use the Lagrangian approach to develop analytical expressions for
efficiency and soliton temporal placement within the pumping pulse,
and our measurements reveal features in the tuning dependence of
soliton power and efficiency not seen in continuous pumping. Our
experimentally confirmed expressions for efficiency will be useful in
understanding advantages and limitations of pulse pumped systems.
Funder
National Aeronautics and Space
Administration
Air Force Office of Scientific
Research
National Science Foundation
Subject
Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Cited by
32 articles.
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