000230060 001__ 230060
000230060 005__ 20181203024754.0
000230060 0247_ $$2doi$$a10.1364/OPTICA.4.000684
000230060 02470 $$2ISI$$a000406093300002
000230060 037__ $$aARTICLE
000230060 245__ $$aOctave-spanning dissipative Kerr soliton frequency combs in Si3N4 microresonators
000230060 269__ $$a2017
000230060 260__ $$aWashington$$bOptical Soc Amer$$c2017
000230060 300__ $$a8
000230060 336__ $$aJournal Articles
000230060 520__ $$aOctave-spanning, self-referenced frequency combs are applied in diverse fields ranging from precision metrology to astrophysical spectrometer calibration. The octave-spanning optical bandwidth is typically generated through non-linear spectral broadening of femtosecond pulsed lasers. In the past decade, Kerr frequency comb generators emerged as a novel scheme offering chip-scale integration, high repetition rate, and bandwidths that are only limited by group velocity dispersion. The recent observation of the dissipative Kerr soliton (DKS) operation regime, along with dispersive wave formation, has provided the means for fully coherent, broadband Kerr frequency comb generation with an engineered spectral envelope. Here, by carefully optimizing the photonic Damascene fabrication process, and dispersion engineering of Si3N4 microresonators with a free spectral range of 1 THz, we achieve bandwidths exceeding one octave at low powers (similar to 100 mW) for pump lasers residing in the telecom C band (1.55 mu m) as well as in the O band (1.3 mu m). Precise dispersion engineering enables emission of two dispersive waves, increasing the power in the spectral ends of the comb, down to a wavelength as short as 850 nm. Investigating the coherence of the generated Kerr comb states, we unambiguously identify DKS states using a response measurement. This allows demonstrating octave-spanning DKS comb states at both pump laser wavelengths of 1.3 mu m and 1.55 mu m, including the broadest DKS state generated to date, spanning more than 200 THz of optical bandwidth. Octave-spanning DKS frequency combs can be applied in metrology or spectroscopy, and their operation at 1.3 mu m enables applications in biological and medical imaging such as Kerr-comb-based optical coherence tomography or dual-comb coherent anti-Stokes Raman scattering. (C) 2017 Optical Society of America
000230060 700__ $$0247648$$aPfeiffer, Martin H. P.$$g203731
000230060 700__ $$aHerkommer, Clemens
000230060 700__ $$0250125$$aLiu, Junqiu$$g262988
000230060 700__ $$0248824$$aGuo, Hairun$$g253712
000230060 700__ $$0249007$$aKarpov, Maxim$$g252379
000230060 700__ $$0248322$$aLucas, Erwan$$g222494
000230060 700__ $$0242444$$aZervas, Michael$$g176318
000230060 700__ $$0244694$$aKippenberg, Tobias J.$$g182444
000230060 773__ $$tOptica
000230060 909C0 $$0252348$$pLPQM
000230060 909CO $$ooai:infoscience.tind.io:230060$$particle$$pSB$$pSTI
000230060 917Z8 $$x262988
000230060 937__ $$aEPFL-ARTICLE-230060
000230060 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000230060 980__ $$aARTICLE