摘要We report a highly efficient and high power self-starting femtosecond Cr:forsterite laser pumped by a 1064-nm Yb doped fibre laser. Five chirped mirrors are used to compensate for the intra-cavity group-delay dispersion, and the mode-locking is initiated by a semiconductor saturable absorber mirror (SESAM). Under pump power of 7.9W, stable femtosecond laser pulses with average power of 760mW are obtained, yielding a pump power slope efficiency of 12.3%. The measured pulse duration and spectral bandwidth (FWHM) are 46fs and 45nm; the repetition rate is 82MHz.
Abstract:We report a highly efficient and high power self-starting femtosecond Cr:forsterite laser pumped by a 1064-nm Yb doped fibre laser. Five chirped mirrors are used to compensate for the intra-cavity group-delay dispersion, and the mode-locking is initiated by a semiconductor saturable absorber mirror (SESAM). Under pump power of 7.9W, stable femtosecond laser pulses with average power of 760mW are obtained, yielding a pump power slope efficiency of 12.3%. The measured pulse duration and spectral bandwidth (FWHM) are 46fs and 45nm; the repetition rate is 82MHz.
[1] Gilbert S L, Swann W C and Dennis T 2001 Proc. SPIE 4269 184 [2] Chu S W, Chen I H, Liu T M, Chen P C, Sun C K and Lin B L2001 Opt. Lett. 26 1909 [3] Herz P, Chen Y, Aguirre A, Fujimoto J, Mashimo H, SchmittJ, Koski A, Goodnow J and Petersen C 2004 Opt. Express 12 3532 [4] Corwin K L, Thomann I, Dennis T, Fox R W, Swann W, CurtisE A, Oates C W, Wilpers G, Bartels A, Gilbert S L, Hollberg L,Newbury N R, Diddams S A, Nicholson J W and Yan M F 2004 Opt.Lett. 29 397 [5] Wei Z , Kobayashi Y, Zhang Z and Torizuka K 2001 Opt.Lett. 26 1806 [6] Togashi T, Nabekawa Y, Sekikawa T and Watanabe S 1999 Appl. Phys. B 68 169 [7] Petricevic V, Gayen S K, Alfano R R, Yamagishi K, Anzai Hand Yamaguchi Y 1988 Appl. Phys. Lett. 52 1040 [8] Seas A, Petricevic V and Alfano R R 1991 Opt. Lett. 16 1668 [9] Sennaroglu A, Carrig T J and Pollock C R 1992 Opt.Lett. 17 1216 [10] Yanovsky V, Pang Y, Wise F and Minkov B I 1993 Opt.Lett. 18 1541 [11] Chudoba C, Fujimoto J G, Ippen E P, Haus H A, Morgner U,Kartner F X, Scheuer V, Angelow G and Tschudi T 2001 Opt.Lett. 26 292 [12] Zhang Z, Torizuka K, Itatani T, Kobayashi K, Sugaya T andNakagawa T 1997 Opt. Lett. 22 1006 [13] Zhou B, Wang P, Cang Y, Zheng J, Wei Z and Chen L 2007 Proc. SPIE 6279 62793W [14] Thomann I, Hollberg L, Diddams S A and Equall R 2003 Appl. Opt. 42 1661 [15] Petrov V, Shcheslavskiy V, Mirtchev T, Noack F, ItataniT, Sugaya T and Nakagawa T 1998 Electron. Lett. 34 559