[1] Newbury N 2011 Nat. Photon. 5 186
[2] Coddington I, Swann W, Newbury N 2009 Nat. Photon. 3 351
[3] Giorgetta F, Swann W, Sinclair S, Baumann E, Conddington I, Newbury N 2013 Nat. Photon. 7 434
[4] Lomsadze B, Cundiff S 2017 Sci. Rep. 7 14018
[5] Meng F, Cao S Y, Cai Y, Wang G Z, Cao J P, Li T C, Fang Z J 2011 Acta Phys. Sin. 60 100601 (in Chinese) [孟飞, 曹士英, 蔡岳, 王贵重, 曹建平, 李天初, 方占军 2011 物理学报 60 100601]
[6] Coddington I, Swan W, Newbury N 2008 Phys. Rev. Lett. 100 013902
[7] Bernhardt B, Ozawa A, Jacquet P, Jacquey M, Kobayashi Y, Udem T, Holzwarth R, Guelachvili G, Hnsch T, Picqu N 2009 Nat. Photon. 4 55
[8] Baumann E, Giorgetta F, Swann W, Zolot A, Coddington I, Newbury N 2011 Phys. Rev. A 84 062513
[9] Ideguchi T, Poisson A, Guelachvili G, Picqu N, Hnsch T 2014 Nat. Commun. 5 3375
[10] Cassinerio M, Gambetta A, Coluccelli N, Laporta P, Galzerano G 2014 Appl. Phys. Lett. 104 231102
[11] Okubo S, Iwakuni K, Inaba H, Hosaka K, Onae A, Sasada H, Hong F 2015 Appl. Phys. Express 8 082402
[12] Coddington I, Newbury N, Swann W 2016 Optica 3 414
[13] Yang H, Wei H, Zhang H, Chen K, Li Y, Smolski V, Vodopyanov K 2016 Appl. Opt. 55 6321
[14] Yang H L, Wei H Y, Li Y, Ren L B, Zhang H Y 2014 Spectroscopy and Spectral Analysis 34 335 (in Chinese) [杨宏雷, 尉昊赟, 李岩, 任利兵, 张弘元 2014 光谱学与光谱分析 34 335]
[15] Yang H, Wu X, Zhang H, Zhao S, Yang L, Wei H, Li Y 2016 Appl. Opt. 55 D29
[16] Yang H, Wei H, Li Y 2016 Chin. Phys. B 25 044207
[17] Thorpe J, Ye J 2008 Appl. Phys. B 91 397
[18] Adler F, Thorpe J, Kevin C 2010 Ann. Rev. Anal. Chem. 3 175
[19] Foltynowicz A, Masłowski P, Fleisher A, Bjork B, Ye J 2012 Appl. Phys. B 110 163
[20] Khodabakhsh A, Alrahman C, Foltynowicz A 2014 Opt. Lett. 39 5034
[21] Hodges T, Layer P, Miller W 2004 Rev. Sci. Instrum. 75 849
[22] Mondelain D, Sala T, Kassi S, Romanini D, Marangoni M, Campargue A 2015 J. Quant. Spectrosc. Radat. Transfer. 154 35
[23] Ball S, Povey I, Norton E, Jones R 2011 Chem. Phys. Lett. 342 113
[24] Thorpe M, Moll K, Jones R, Safdi B, Ye J 2006 Science 311 1595
[25] Edwards C, Margolis H, Barwood G, Lea S, Gill P, Rowley W 2005 Appl. Phys. B 80 977
[26] Jones D, Diddams S, Ranka J, Stentz A, Windeler R, Hall J, Cundiff S 2000 Science 288 635
[27] Foltynowicz A, Masłowski P, Ban T, Adler F, Cossel K, Briles T, Ye J 2011 Faraday Discuss. 150 23
[28] Rubiola E 2009 Phase Noise and Frequency Stability in Oscillators (Cambridge: Cambridge University Press) pp29-30