Open AccessConversion efficiency of soliton Kerr combs
Author(s) -
Jae K. Jang,
Yoshitomo Okawachi,
Yun Zhao,
Xingchen Ji,
Chaitanya Joshi,
Michal Lipson,
Alexander L. Gaeta
Publication year - 2021
Publication title -
optics letters/optics index
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.423654
Subject(s) - soliton , optics , physics , kerr effect , frequency comb , coupling (piping) , free spectral range , scaling , range (aeronautics) , materials science , laser , nonlinear system , quantum mechanics , geometry , mathematics , metallurgy , composite material
We investigate the conversion efficiency (CE) of soliton modelocked Kerr frequency combs. Our analysis reveals three distinct scaling regimes of CE with the cavity free spectral range (FSR), which depends on the relative contributions of the coupling and propagation loss to the total cavity loss. Our measurements, for the case of critical coupling, verify our theoretical prediction over a range of FSRs and pump powers. Our numerical simulations also indicate that mode crossings have an adverse effect on the achievable CE. Our results indicate that microresonator combs operating with spacings in the electronically detectable regime are highly inefficient, which could have implications for integrated Kerr comb devices.