[1] S. A. Diddams, D. J. Jones, J. Ye, S. T. Cundiff, J. L. Hall, J. K. Ranka, R. S. Windeler, R. Holzwarth, T. Udem, T. W. Hänsch. Direct link between microwave and optical frequencies with a 300 THz femtosecond laser comb. Phys. Rev. Lett., 84, 5102-5105(2000).
[2] T. Udem, R. Holzwarth, T. W. Hänsch. Optical frequency metrology. Nature, 416, 233-237(2002).
[3] R. Holzwarth, T. Udem, T. W. Hänsch, J. C. Knight, W. J. Wadsworth, P. St. J. Russell. Optical frequency synthesizer for precision spectroscopy. Phys. Rev. Lett., 85, 2264-2267(2000).
[4] D. J. Jones, S. A. Diddams, J. K. Ranka, A. Stentz, R. S. Windeler, J. L. Hall, S. T. Cundiff. Carrier-envelope phase control of femtosecond mode-locked lasers and direct optical frequency synthesis. Science, 288, 635-640(2000).
[5] A. Dutt, C. Joshi, X. Ji, J. Cardenas, Y. Okawachi, K. Luke, A. L. Gaeta, M. Lipson. On-chip dual comb source for spectroscopy(2016).
[6] T. Ideguchi, T. Nakamura, Y. Kobayashi, K. Goda. Kerr-lens mode-locked bidirectional dual-comb ring laser for broadband dual-comb spectroscopy. Optica, 3, 748-753(2016).
[7] Z. Zhang, C. Gu, J. Sun, C. Wang, T. Gardiner, D. T. Reid. Asynchronous midinfrared ultrafast optical parametric oscillator for dual-comb spectroscopy. Opt. Lett., 37, 187-189(2012).
[8] M.-G. Suh, Q.-F. Yang, K. Y. Yang, X. Yi, K. Vahala. Microresonator soliton dual-comb spectroscopy. Science, 354, 600-603(2016).
[9] M. Yu, Y. Okawachi, A. G. Griffith, N. Picqué, A. L. Gaeta. Silicon-chip-based mid-infrared dual-comb spectroscopy(2017).
[10] V. Ataie, P. P. Kuo, A. Wiberg, Z. Tong, C. Huynh, N. Alic, S. Radic. Ultrafast absolute ranging by coherent parametric comb. Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OTh3D.2(2013).
[11] P. Trocha, D. Ganin, M. Karpov, M. H. P. Pfeiffer, A. Kordts, J. Krockenberger, S. Wolf, P. Marin-Palomo, C. Weimann, S. Randel, W. Freude, T. J. Kippenberg, C. Koos. Ultrafast optical ranging using microresonator soliton frequency combs(2017).
[12] M.-G. Suh, K. Vahala. Soliton microcomb range measurement. Science, 359, 884-887(2018).
[13] I. Coddington, N. Newbury, W. Swann. Dual-comb spectroscopy. Optica, 3, 414-426(2016).
[14] M. A. R. Reber, Y. Chen, T. K. Allison. Cavity-enhanced ultrafast spectroscopy: ultrafast meets ultrasensitive. Optica, 3, 311-317(2016).
[15] P. Marin-Palomo, J. N. Kemal, M. Karpov, A. Kordts, J. Pfeifle, M. H. P. Pfeiffer, P. Trocha, S. Wolf, V. Brasch, M. H. Anderson, R. Rosenberger, K. Vijayan, W. Freude, T. J. Kippenberg, C. Koos. Microresonator-based solitons for massively parallel coherent optical communications. Nature, 546, 274-279(2017).
[16] S. B. Papp, K. Beha, P. DelHaye, F. Quinlan, H. Lee, K. J. Vahala, S. A. Diddams. A microresonator frequency comb optical clock. Optica, 1, 10-14(2014).
[17] J. Li, H. Lee, T. Chen, K. J. Vahala. Low-pump-power, low-phase-noise, and microwave to millimeter-wave repetition rate operation in microcombs. Phys. Rev. Lett., 109, 233901(2012).
[18] Q. F. Yang, X. Yi, K. Y. Yang, K. Vahala. Counter-propagating solitons in microresonators. Nat. Photonics, 11, 560-564(2017).
[19] C. Joshi, A. Klenner, Y. Okawachi, M. Yu, K. Luke, X. Ji, M. Lipson, A. L. Gaeta. Counter-rotating cavity solitons in a silicon nitride microresonator. Opt. Lett., 43, 547-550(2018).
[20] X. Zhao, J. M. Silver, L. Del Bino, P. Del’Haye. Dual comb generation in a single microresonator. Conference on Lasers and Electro-Optics, STh3L.4(2017).
[21] C. Bao, P. Liao, A. Kordts, L. Zhang, A. Matsko, M. Karpov, M. H. P. Pfeiffer, G. Xie, Y. Cao, Y. Yan, A. Almaiman, Z. Zhao, A. Mohajerin-Ariaei, A. Fallahpour, F. Alishahi, M. Tur, L. Maleki, T. J. Kippenberg, A. E. Willner. Orthogonally polarized Kerr frequency combs(2017).
[22] W. Wang, S. T. Chu, B. E. Little, A. Pasquazi, Y. Wang, L. Wang, W. Zhang, L. Wang, X. Hu, G. Wang, H. Hu, Y. Su, F. Li, Y. Liu, W. Zhao. Dual-pump Kerr micro-cavity optical frequency comb with varying FSR spacing. Sci. Rep., 6, 28501(2016).
[23] A. Pasquazi, L. Caspani, M. Peccianti, M. Clerici, M. Ferrera, L. Razzari, D. Duchesne, B. E. Little, S. T. Chu, D. J. Moss, R. Morandotti. Self-locked optical parametric oscillation in a CMOS compatible microring resonator: a route to robust optical frequency comb generation on a chip. Opt. Express, 21, 13333-13341(2013).
[24] X. Hu, W. Wang, L. Wang, W. Zhang, Y. Wang, W. Zhao. Numerical simulation and temporal characterization of dual-pumped microring- resonator-based optical frequency combs. Photon. Res., 5, 207-211(2017).
[25] J. Li, H. Lee, K. Y. Yang, K. J. Vahala. Sideband spectroscopy and dispersion measurement in microcavities. Opt. Express, 20, 26337-26344(2012).
[26] T. Herr, V. Brasch, J. D. Jost, C. Y. Wang, N. M. Kondratiev, M. L. Gorodetsky, T. J. Kippenberg. Temporal solitons in optical microresonators. Nat. Photonics, 8, 145-152(2014).
[27] M. Peccianti, A. Pasquazi, Y. Park, B. E. Little, S. T. Chu, D. J. Moss, R. Morandotti. Demonstration of a stable ultrafast laser based on a nonlinear microcavity. Nat. Commun., 3, 765-766(2012).
[28] E. Yoshida, M. Nakazawa. Low-threshold 115-GHz continuous-wave modulational-instability erbium-doped fiber laser. Opt. Lett., 22, 1409-1411(1997).
[29] W. Wang, W. Zhang, S. T. Chu, B. E. Little, Q. Yang, L. Wang, X. Hu, L. Wang, G. Wang, Y. Wang, W. Zhao. Repetition rate multiplication pulsed laser source based on a microring resonator. ACS Photon., 4, 1677-1683(2017).
[30] J. Ma, X. Jiang, M. Xiao. Kerr frequency combs in large-size, ultra-high-Q toroid microcavities with low repetition rates. Photon. Res., 5, B54-B58(2017).
[31] P. Del’Haye, T. Herr, E. Gavartin, M. L. Gorodetsky, R. Holzwarth, T. J. Kippenberg. Octave spanning tunable frequency comb from a microresonator. Phys. Rev. Lett., 107, 063901(2011).
[32] S. B. Papp, P. Del’Haye, S. A. Diddams. Mechanical control of a microrod-resonator optical frequency comb. Phys. Rev. X, 3, 031003(2012).
[33] I. S. Grudinin, N. Yu, L. Maleki. Generation of optical frequency combs with a CaF2 resonator. Opt. Lett., 34, 878-880(2009).
[34] D. C. Cole, E. S. Lamb, P. Del’Haye, S. A. Diddams, S. B. Papp. Soliton crystals in Kerr resonators. Nat. Photonics, 11, 671-676(2017).
