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A scanning spectral filter method to improve the signal-noise-ratio in the femtosecond chains is proposed by using the characteristic that the instantaneous frequency varies with the time approximately linearly for the chirped pulse in the time-frequency domain. The scanning spectral filtering for reduing the amplification of spontaneous emission (ASE) intensity is analyzed in the time-frequency domain by using the Short-Time Fourier Transform method. The results show that the pulse contrast can be improved by two orders, and the transmission efficiency of the chirped pulse can exceed 90% when the synchronizing time jitter ranges from -2ps to 2ps and the chirp rate p from 0.9C/T2 to 1.10C/T2. Adopting the cascaded scanning filter to improve the pulse contrast is investigated too, which can improve the pulse contrast effectively. The great advantage of this novel nonlinear spectral filter technology is high energy and high peak intensity femtosecond chains for it filters out the ASE in the near field in temporal domain.
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Keywords:
- ultrafast optics /
- ultrafast technology /
- spectral scanning filtering /
- short time fourier transform
[1] Bahk S W,Rousseau P,Planchon T A,Chvykov V,Kalintchenko G,Maksimchuk A,Mourou G A,Yanovsky V 2004 Opt.Lett.29 2837
[2] Perry M D,Pennington D M,Stuart B C,Tietbohl G,Britten J A,Brown C,Herman S,Golick B,Kartz M,Miller J,Powell H T,Vergino M,Yanovsky V 1999 Opt.Lett.24 160
[3] Bonlie J D,Patterson F,Price D,White B,White,Springer P 2000 Appl.Phys.B 70 S155
[4] Huang X J,Peng H S,Wei X F,Wang X D,Zeng X M,Zhou K N,Guo Y,Liu L Q,Wang X,Zhu Q H,Lin D H,Tang X D,Zhang X M,Chu X L,Wang Q Y 2005 High Power Laser and Particle Beams 17 1685 (in Chinese)[黄小军,彭翰生,魏晓峰,王晓东,曾小明,周凯南,郭仪,刘兰琴,王逍,朱启华,林东晖,唐晓东,张小民,楚晓亮,王清月 2005 强激光与粒子束 17 1685]
[5] Umstadter D 2001 Physics Plasmas 8 177
[6] Wharton K B,Boley C D,Komashko A M,Rubenchik A M,Zweiback J,Crane J,Hays G,Cowan T E,Ditmire T 2001 Phys.Rev.E 64 02540121
[7] Peng H S 2006 Chinese Journal of Lasers 33 721 (in Chinese)[彭翰生 2006 中国激光 33 721]
[8] Li W C,Wang Z H,Liu C,Teng H,Wei Z Y 2011 Acta Phys.Sin.60 124210 (in Chinese)[李伟昌,王兆华,刘成,滕浩,魏志义 2011 物理学报 60 124210 ]
[9] Chvykov V,Rousseau P,Reed S,Kalinchenko G,andYanovsky V 2006 Opt.Lett.31 1456
[10] Liu C,Wang Z H,Li W C,Liu F,Wei Z Y 2010 Acta Phys.Sin.59 7036 (in Chinese)[刘成,王兆华,李伟昌,刘峰,魏志义 2010 物理学报 59 7036]
[11] Lévy A,Ceccotti T,Oliveira P D,Réau F,Perdrix M,Quéré F,Monot P,Bougeard M,Lagadec H,Martin P 2007 Opt.Lett.32 310
[12] Yanovsky Y,Felix C,Mourou G 2002 Appl.Phys.B 74 S181
[13] Homoelle D,Gaeta A L,Yanovsky V,Mourou G 2002 Opt.Lett.27 1646
[14] Wang Z H,Liu C,Shen Z W,Zhang Q,Teng H,Wei Z Y 2011 Opt.Lett.36 3194
[15] Kiriyama H,Mori M,Nakai Y,Yamamoto Y,Tanoue M,Akutsu A,Shimomura T,Kondo S,Kanazawa S,Daido H,Kimura T,Miyanaga N 2007 Opt.Lett.32 2315
[16] Ross I N,Matousek P,Towrie M,Langley A J,Collier J L 1997 Opt.Commun.114 125
[17] Yoshida H,Ishii E,Kodama R,Fujita H,Kitagawa Y,Izawa Y,Yamanaka T 2003 Opt.Lett.28 257
[18] Zeng S G,Zhang B,Dan Y Q,Sui Z,Sun N C 2010 Opt.Commun.283 4054
[19] Wang Z H,Liu,C,Shen Z W,Wei Z Y 2011 Opt.Lett.36 319
[20] Ren H Y,Qian L J,Zhu H Y 2010 Opt.Exp.218 12948
[21] Hiromitsu K,Mori M,Yoshiki N 2010 Appl.Opt.49 2105
[22] Bagnoud V,Zuegel J D,Forget N,Blanc C L 2007 Opt.Exp.15 5504
[23] Xu Y,Leng Y X,Lin L H,Wang W Y,Huang Y S,Li R X 2010 Chinese Optics Letters 8 123
[24] Xiao Y Z,Maywar D N,Agrawal G P 2011 JOSAB 28 1685
[25] Yu J,Yuan S,Gao J Y,Sun L Z 2001 JOSA A 18 2153
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[1] Bahk S W,Rousseau P,Planchon T A,Chvykov V,Kalintchenko G,Maksimchuk A,Mourou G A,Yanovsky V 2004 Opt.Lett.29 2837
[2] Perry M D,Pennington D M,Stuart B C,Tietbohl G,Britten J A,Brown C,Herman S,Golick B,Kartz M,Miller J,Powell H T,Vergino M,Yanovsky V 1999 Opt.Lett.24 160
[3] Bonlie J D,Patterson F,Price D,White B,White,Springer P 2000 Appl.Phys.B 70 S155
[4] Huang X J,Peng H S,Wei X F,Wang X D,Zeng X M,Zhou K N,Guo Y,Liu L Q,Wang X,Zhu Q H,Lin D H,Tang X D,Zhang X M,Chu X L,Wang Q Y 2005 High Power Laser and Particle Beams 17 1685 (in Chinese)[黄小军,彭翰生,魏晓峰,王晓东,曾小明,周凯南,郭仪,刘兰琴,王逍,朱启华,林东晖,唐晓东,张小民,楚晓亮,王清月 2005 强激光与粒子束 17 1685]
[5] Umstadter D 2001 Physics Plasmas 8 177
[6] Wharton K B,Boley C D,Komashko A M,Rubenchik A M,Zweiback J,Crane J,Hays G,Cowan T E,Ditmire T 2001 Phys.Rev.E 64 02540121
[7] Peng H S 2006 Chinese Journal of Lasers 33 721 (in Chinese)[彭翰生 2006 中国激光 33 721]
[8] Li W C,Wang Z H,Liu C,Teng H,Wei Z Y 2011 Acta Phys.Sin.60 124210 (in Chinese)[李伟昌,王兆华,刘成,滕浩,魏志义 2011 物理学报 60 124210 ]
[9] Chvykov V,Rousseau P,Reed S,Kalinchenko G,andYanovsky V 2006 Opt.Lett.31 1456
[10] Liu C,Wang Z H,Li W C,Liu F,Wei Z Y 2010 Acta Phys.Sin.59 7036 (in Chinese)[刘成,王兆华,李伟昌,刘峰,魏志义 2010 物理学报 59 7036]
[11] Lévy A,Ceccotti T,Oliveira P D,Réau F,Perdrix M,Quéré F,Monot P,Bougeard M,Lagadec H,Martin P 2007 Opt.Lett.32 310
[12] Yanovsky Y,Felix C,Mourou G 2002 Appl.Phys.B 74 S181
[13] Homoelle D,Gaeta A L,Yanovsky V,Mourou G 2002 Opt.Lett.27 1646
[14] Wang Z H,Liu C,Shen Z W,Zhang Q,Teng H,Wei Z Y 2011 Opt.Lett.36 3194
[15] Kiriyama H,Mori M,Nakai Y,Yamamoto Y,Tanoue M,Akutsu A,Shimomura T,Kondo S,Kanazawa S,Daido H,Kimura T,Miyanaga N 2007 Opt.Lett.32 2315
[16] Ross I N,Matousek P,Towrie M,Langley A J,Collier J L 1997 Opt.Commun.114 125
[17] Yoshida H,Ishii E,Kodama R,Fujita H,Kitagawa Y,Izawa Y,Yamanaka T 2003 Opt.Lett.28 257
[18] Zeng S G,Zhang B,Dan Y Q,Sui Z,Sun N C 2010 Opt.Commun.283 4054
[19] Wang Z H,Liu,C,Shen Z W,Wei Z Y 2011 Opt.Lett.36 319
[20] Ren H Y,Qian L J,Zhu H Y 2010 Opt.Exp.218 12948
[21] Hiromitsu K,Mori M,Yoshiki N 2010 Appl.Opt.49 2105
[22] Bagnoud V,Zuegel J D,Forget N,Blanc C L 2007 Opt.Exp.15 5504
[23] Xu Y,Leng Y X,Lin L H,Wang W Y,Huang Y S,Li R X 2010 Chinese Optics Letters 8 123
[24] Xiao Y Z,Maywar D N,Agrawal G P 2011 JOSAB 28 1685
[25] Yu J,Yuan S,Gao J Y,Sun L Z 2001 JOSA A 18 2153
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