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A new method for compressing ultra-short laser pulse has been proposed in which cascaded quadratic nonlinearity with tilt pulse is used. The pulse compression scheme with group velocity matching between fundamental harmonic (FH) and second harmonic (SH) pulses in a single BBO crystal has been analyzed theoretically. The compressed results have been investigated and compared between the cases of group velocity matching and mismatching. Furthermore, the influences of the phase mismatching between the FH and SH pulses, the length of the nonlinear crystal, the initial peak intensity and pulse-duration of the FH pulse on the pulse-duration compression have been analyzed and simulated. The results show that the matched group velocity between FH and SH pulses can improve significantly both the temporal profile and the spectrum distribution of the compressed pulse. High quality compression can be achieved by optimizing and selecting the parameters such as phase mismatch, length of the nonlinear crystal, initial intensity and so on. For the fundamental pulse with 800 nm central wavelength, 100 fs duration and 50 GW/cm2 peak intensity, the 20fs output FH pulse has been achieved, and at the same time the 14 fs SH pulse has also been generated in 25 mm-long BBO crystal with Δk=60 mm-1 (1.98° detuning angle) and external tilt angle γ0=74°.
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Keywords:
- tilt pulse /
- cascaded quadratic nonlinearity /
- group velocity mismatch /
- pulse compression
[1] Zhu Y, Chen X W, Leng Y X, Liu J, Lin L H, Li R X, Xu Z Z 2005 Chin. J. Lasers 32 1614 (in Chinese) [朱毅, 陈晓伟, 冷雨欣, 刘军, 林礼煌, 李儒新, 徐至展 2005 中国激光 32 1614]
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[3] Jin Y X, Zhao Y A, Shao J D, Fan Z X, Liu S J, Ma J Y, Shen Z C, Kong W J, Shen J 2007 Acta Phy. Sin. 564542 (in Chinese) [晋云霞, 赵元安, 邵建达, 范正修, 刘世杰, 麻健勇, 沈自才, 孔伟金, 沈健 2007 物理学报 56 4542]
[4] Hauri C P, Kornelis W, Helbing F W, Heinrich A, Couairon A, Mysyrowicz A, Bieger J, Keller U 2004 Appl. Phys. B 79 673
[5] Mevel E, Tcherbakoff O, Salin E, Constant E 2003 J. Opt. Soc. Am. B 20 105
[6] Xu F, Liu J S, Li R X, Xu Z Z 2007 Chin. Opt. Lett. 5 490
[7] Guo L W, Zhou C H 2006 Opt. Commun. 257 180
[8] Chen X W, Zhu Y, Liu J, Leng Y X, Ge X C, Li R X, Xu Z Z 2005 Acta Phy. Sin. 545178 (in Chinese) [陈晓伟, 朱毅, 刘军, 冷雨欣, 葛晓春, 李儒新, 徐至展 2005 物理学报 54 5178]
[9] Liu X, Qian L J, Wise F 1999 Opt. Lett. 24 1777
[10] Dubietis A, Valiulis G, Danielius R, Piskarskas A 1996 Opt. Lett. 21 1262
[11] Liu H J, Chen G F, Zhao W, Wang Y S, Cheng Z 2003 Acta Optica Sinica 23 11 (in Chinese) [刘红军, 陈国夫, 赵卫, 王屹山, 程昭 2003 光学学报 23 11]
[12] Wang K, Qian L J, Zhu H Y 2008 Chinese Science Bulletin 53 45 (in Chinese) [王科, 钱列, 朱鹤元 2008 科学通报 53 45]
[13] Morten B, Wise F W 2010 Phys. Rev. A 81 053815
[14] Sidick E, Knoesen A, Dienes A 1995 J. Opt. Soc. Am. B 12 1704
[15] Sidick E, Knoesen A, Dienes A 1994 Opt. Lett. 19 266
[16] Weiner A M 1983 IEEE J. Quantum Electron. 19 1276
[17] Szatmari S, Nagy T, Simon P, Feuerhake M 1996 Proceedings of the Ninth International Conference on Ultrafast Processes in Spectroscopy Plenum, New York, p621
[18] Diels J C, Rudolph W 2006 Ultrashort Laser Pulse Phenomena (2nd Ed) (Elsevier Press) p185
[19] Dubietis A, Valiulis G, Tamosauskas G, Danielius R, Piskarskas A 1997 Opt. Lett. 22 1071
[20] DeSalvo R, Hagan D J, Sheik-Bahae M, Stegeman G, Van Stryland E W, Vanherzeele H 1992 Opt Lett. 17 28
[21] Zhang Z G 2011 Femtosecond Laser technology (1st Ed) (Beijing: Science Press.) p7 (in Chinese) [张志刚 2011 飞秒激光技术(第一版) (北京: 科学出版社) 第7页]
[22] Ashihara S, Nishina J, Shimura T, Kuroda K 2002 J. Opt. Soc. Am. B 19 2505
[23] Hache F, Zeboulon A, Gallot G, Gale G M 1995 Opt. Lett. 20 1556
[24] Albert O, Etchepare J 1998 Opt. Commu. 154 345
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[1] Zhu Y, Chen X W, Leng Y X, Liu J, Lin L H, Li R X, Xu Z Z 2005 Chin. J. Lasers 32 1614 (in Chinese) [朱毅, 陈晓伟, 冷雨欣, 刘军, 林礼煌, 李儒新, 徐至展 2005 中国激光 32 1614]
[2] Agrawal G P (Write), Jia D F, Yu Z H (Trans) 2010 Nonlinear Fiber Optics {& Application of Nonlinear Fiber Optic} (2nd Ed) (Beijing: Publishing House of Electronics Industry) p562 (in Chinese) [阿戈沃(著), 贾东方, 余震虹(译) 2010 非线性光纤光学原理及应用(第二版) (北京: 电子工业出版社) 第562页]
[3] Jin Y X, Zhao Y A, Shao J D, Fan Z X, Liu S J, Ma J Y, Shen Z C, Kong W J, Shen J 2007 Acta Phy. Sin. 564542 (in Chinese) [晋云霞, 赵元安, 邵建达, 范正修, 刘世杰, 麻健勇, 沈自才, 孔伟金, 沈健 2007 物理学报 56 4542]
[4] Hauri C P, Kornelis W, Helbing F W, Heinrich A, Couairon A, Mysyrowicz A, Bieger J, Keller U 2004 Appl. Phys. B 79 673
[5] Mevel E, Tcherbakoff O, Salin E, Constant E 2003 J. Opt. Soc. Am. B 20 105
[6] Xu F, Liu J S, Li R X, Xu Z Z 2007 Chin. Opt. Lett. 5 490
[7] Guo L W, Zhou C H 2006 Opt. Commun. 257 180
[8] Chen X W, Zhu Y, Liu J, Leng Y X, Ge X C, Li R X, Xu Z Z 2005 Acta Phy. Sin. 545178 (in Chinese) [陈晓伟, 朱毅, 刘军, 冷雨欣, 葛晓春, 李儒新, 徐至展 2005 物理学报 54 5178]
[9] Liu X, Qian L J, Wise F 1999 Opt. Lett. 24 1777
[10] Dubietis A, Valiulis G, Danielius R, Piskarskas A 1996 Opt. Lett. 21 1262
[11] Liu H J, Chen G F, Zhao W, Wang Y S, Cheng Z 2003 Acta Optica Sinica 23 11 (in Chinese) [刘红军, 陈国夫, 赵卫, 王屹山, 程昭 2003 光学学报 23 11]
[12] Wang K, Qian L J, Zhu H Y 2008 Chinese Science Bulletin 53 45 (in Chinese) [王科, 钱列, 朱鹤元 2008 科学通报 53 45]
[13] Morten B, Wise F W 2010 Phys. Rev. A 81 053815
[14] Sidick E, Knoesen A, Dienes A 1995 J. Opt. Soc. Am. B 12 1704
[15] Sidick E, Knoesen A, Dienes A 1994 Opt. Lett. 19 266
[16] Weiner A M 1983 IEEE J. Quantum Electron. 19 1276
[17] Szatmari S, Nagy T, Simon P, Feuerhake M 1996 Proceedings of the Ninth International Conference on Ultrafast Processes in Spectroscopy Plenum, New York, p621
[18] Diels J C, Rudolph W 2006 Ultrashort Laser Pulse Phenomena (2nd Ed) (Elsevier Press) p185
[19] Dubietis A, Valiulis G, Tamosauskas G, Danielius R, Piskarskas A 1997 Opt. Lett. 22 1071
[20] DeSalvo R, Hagan D J, Sheik-Bahae M, Stegeman G, Van Stryland E W, Vanherzeele H 1992 Opt Lett. 17 28
[21] Zhang Z G 2011 Femtosecond Laser technology (1st Ed) (Beijing: Science Press.) p7 (in Chinese) [张志刚 2011 飞秒激光技术(第一版) (北京: 科学出版社) 第7页]
[22] Ashihara S, Nishina J, Shimura T, Kuroda K 2002 J. Opt. Soc. Am. B 19 2505
[23] Hache F, Zeboulon A, Gallot G, Gale G M 1995 Opt. Lett. 20 1556
[24] Albert O, Etchepare J 1998 Opt. Commu. 154 345
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