000255541 001__ 255541
000255541 005__ 20181203025012.0
000255541 0247_ $$2doi$$a10.1364/OL.43.002106
000255541 02470 $$2DOI$$a10.1364/OL.43.002106
000255541 037__ $$aARTICLE
000255541 245__ $$aHighly efficient coupling of crystalline microresonators to integrated photonic waveguides
000255541 260__ $$c2018
000255541 269__ $$a2018
000255541 336__ $$aJournal Articles
000255541 520__ $$aCrystalline optical whispering gallery mode resonators made from alkaline earth fluorides can achieve exceptionally large optical finesse, and are used in a variety of applications, from frequency stabilization and narrow linewidth lasers, to low-noise microwave generation or soliton Kerr frequency combs. Here we demonstrate an efficient coupling method to resonators of these materials, which employs photonic integrated waveguides on a chip based on silicon nitride. By converting a mode from silicon nitride to a free-hanging silica waveguide on a silicon chip, coupling to a crystalline resonator is achieved with a high extinction, while preserving a quality factor exceeding 200 million. This compact, heterogeneous integration of ultra-high 
000255541 700__ $$aAnderson, M.
000255541 700__ $$aPavlov, N. G.
000255541 700__ $$aJost, J. D.
000255541 700__ $$aLihachev, G.
000255541 700__ $$aLiu, J.
000255541 700__ $$aMorais, T.
000255541 700__ $$aZervas, M.
000255541 700__ $$aGorodetsky, M. L.
000255541 700__ $$aKippenberg, T. J.
000255541 773__ $$q2106$$k9$$j43$$tOptics Letters
000255541 8560_ $$fmohammad.bereyhi@epfl.ch
000255541 909C0 $$xU11892$$mmohammad.bereyhi@epfl.ch$$zPasquier, Simon$$0252348$$yApproved$$pLPQM
000255541 909CO $$pSB$$pSTI$$particle$$ooai:infoscience.epfl.ch:255541
000255541 960__ $$asimon.pasquier@epfl.ch
000255541 961__ $$asimon.pasquier@epfl.ch
000255541 973__ $$aEPFL$$sPUBLISHED$$rREVIEWED
000255541 980__ $$aARTICLE
000255541 981__ $$aoverwrite