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.
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Kong, Ziyun ; Bao, Chengying ; Sandoval, Oscar E. ; Liu, Bohao ; Wang, Cong ; Jaramillo-Villegas, Jose A. ; Qi, Minghao ; Weiner, Andrew M. ( , Optics Letters)
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Bao, Chengying ; Xuan, Yi ; Wang, Cong ; Fülöp, Attila ; Leaird, Daniel E. ; Torres-Company, Victor ; Qi, Minghao ; Weiner, Andrew M. ( , Physical Review Letters)
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Bao, Chengying ; Xuan, Yi ; Jaramillo-Villegas, Jose A. ; Leaird, Daniel E. ; Qi, Minghao ; Weiner, Andrew M. ( , Optics Letters)
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Bao, Chengying ; Xuan, Yi ; Wang, Cong ; Jaramillo-Villegas, Jose A. ; Leaird, Daniel E. ; Qi, Minghao ; Weiner, Andrew M. ( , Optics Letters)
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Observation of Fermi-Pasta-Ulam Recurrence Induced by Breather Solitons in an Optical MicroresonatorBao, Chengying ; Jaramillo-Villegas, Jose A. ; Xuan, Yi ; Leaird, Daniel E. ; Qi, Minghao ; Weiner, Andrew M. ( , Physical Review Letters)
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Wang, Pei-Hsun ; Jaramillo-Villegas, Jose A. ; Xuan, Yi ; Xue, Xiaoxiao ; Bao, Chengying ; Leaird, Daniel E. ; Qi, Minghao ; Weiner, Andrew M. ( , Optics Express)