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构建了一种能够直接输出高功率贝塞尔超短脉冲的光纤激光放大器. 该方案基于在光纤端面特殊设计和制备的微型负轴锥镜, 针对常规超短脉冲光纤激光放大系统所设计, 不需要引入其他分立整形器件, 避免了目前基于轴锥透镜产生贝塞尔光束的通用方法所带来的额外烦琐准直工作, 极大简化了产生贝塞尔光束的方法. 其中的微型负轴锥镜由聚焦粒子束刻蚀法在一段掺镱大模场光子晶体光纤的端面制备, 它和光纤激光系统中的固有准直透镜构成了集成化的光束整形器件. 基于数值模拟结果成功搭建的系统与理论设计一致, 直接输出了在米量级具有高度准直无衍射特性的啁啾皮秒贝塞尔超短脉冲波包, 平均功率高达10.1 W, 对应脉冲能量178 nJ, 经过光栅对压缩后脉冲宽度可达140 fs.High power Bessel pulses directly output from a fiber-based amplifier system are demonstrated. A compact solution based on the inverse micro-axicon (IMAX) on fiber end is proposed for the conventional ultrashort pulse fiber laser system to enable the direct generation of high power Bessel pulses from lasers without any additional exhausting alignments. The IMAX is fabricated on one facet of a ytterbium-doped large mode area fiber by focusing ion beam technique and constitutes an integrated beam shaper in combination with an inherent collimating lens in the fiber laser system. The experimental results accord qualitatively with the simulations. The system can directly generate chirped Bessel pulses with diffraction-free propagation in meter-scaled free space. The highest average power of such a wavepacket can reach 10.1 W, correspongding to 178 nJ, and the pulse duration can be dechirped to 140 fs.
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Keywords:
- diffraction /
- ultrashort pulse generation /
- fiber-optic elements /
- fiber laser
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[2] Bouchal Z, Wagner J, Chlup M 1998 Opt. Commun. 151 207
[3] Karásek V, Čžmár T, Brzobohatý O, Zemánek P, Garcés-Chávez V, Dholakia K 2008 Phys. Rev. Lett. 101 143601
[4] Botcherby E J, Juškaitis R, Wilson T 2006 Opt. Commun. 268 253
[5] Bhuyan M K, Courvoisier F, Lacourt P A, Jacquot M, Salut R, Furfaro L, Dudley J M 2010 Appl. Phys. Lett. 97 081102
[6] McGloin D, Dholakia K 2005 Contemp. Phys. 46 15
[7] Zhang Q A, Wu F T, Zheng W T 2012 Acta Phys. Sin. 61 034205 (in Chinese) [张前安, 吴逢铁, 郑维涛 2012 61 034205]
[8] Wu F T, Ma L, Zhang Q A, Zheng W T, Pu J X 2012 Acta Phys. Sin. 61 014202 (in Chinese) [吴逢铁, 马亮, 张前安, 郑维涛, 蒲继雄 2012 61 014202]
[9] Wu F T, Jiang X G, Liu B, Qiu Z X 2009 Acta Phys. Sin. 58 3125 (in Chinese) [吴逢铁, 江新光, 刘彬, 邱振兴 2009 58 3125]
[10] Bin Z, Zhu L 1998 Appl. Opt. 37 2563
[11] Steinvurzel P, Tantiwanichapan K, Goto M, Ramachandran S 2011 Opt. Lett. 36 4671
[12] Zhu X, Schulzgen A, Li L, Peyghambarian N 2009 Appl. Phys. Lett. 94 201102
[13] Kim J, Jeong Y, Lee S, Ha W, Shin J S, Oh K 2012 Opt. Lett. 37 623
[14] Liberale C, Cojoc G, Candeloro P, Das G, Gentile F, De Angelis F, Di Fabrizio E 2010 IEEE Photon. Technol. Lett. 22 474
[15] Grosjean T, Saleh S S, Suarez M A, Ibrahim I A, Piquerey V, Charraut D, Sandoz P 2007 Appl. Opt. 46 8061
[16] Cabrini S, Liberale C, Cojoc D, Carpentiero A, Prasciolu M, Mora S, Degiorgio V, De Angelis F, Di Fabrizio E 2006 Microelectron Eng. 83 804
[17] Eah S K, Jhe W, Arakawa Y 2003 Rev. Sci. Instrum. 74 4969
[18] Goodman J W 1996 Introduction to Fourier Optics (2nd Ed.) (New York: Mc-Graw Hill) p63
[19] Song Y J, Hu M L, Liu B W, Chai L, Wang Q Y 2008 Acta Phys. Sin. 57 6425 (in Chinese) [宋有建, 胡明列, 刘博文, 柴路, 王清月 2008 57 6425]
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[1] Durnin J, Miceli J J, Eberly J H 1987 Phys. Rev. Lett. 58 1499
[2] Bouchal Z, Wagner J, Chlup M 1998 Opt. Commun. 151 207
[3] Karásek V, Čžmár T, Brzobohatý O, Zemánek P, Garcés-Chávez V, Dholakia K 2008 Phys. Rev. Lett. 101 143601
[4] Botcherby E J, Juškaitis R, Wilson T 2006 Opt. Commun. 268 253
[5] Bhuyan M K, Courvoisier F, Lacourt P A, Jacquot M, Salut R, Furfaro L, Dudley J M 2010 Appl. Phys. Lett. 97 081102
[6] McGloin D, Dholakia K 2005 Contemp. Phys. 46 15
[7] Zhang Q A, Wu F T, Zheng W T 2012 Acta Phys. Sin. 61 034205 (in Chinese) [张前安, 吴逢铁, 郑维涛 2012 61 034205]
[8] Wu F T, Ma L, Zhang Q A, Zheng W T, Pu J X 2012 Acta Phys. Sin. 61 014202 (in Chinese) [吴逢铁, 马亮, 张前安, 郑维涛, 蒲继雄 2012 61 014202]
[9] Wu F T, Jiang X G, Liu B, Qiu Z X 2009 Acta Phys. Sin. 58 3125 (in Chinese) [吴逢铁, 江新光, 刘彬, 邱振兴 2009 58 3125]
[10] Bin Z, Zhu L 1998 Appl. Opt. 37 2563
[11] Steinvurzel P, Tantiwanichapan K, Goto M, Ramachandran S 2011 Opt. Lett. 36 4671
[12] Zhu X, Schulzgen A, Li L, Peyghambarian N 2009 Appl. Phys. Lett. 94 201102
[13] Kim J, Jeong Y, Lee S, Ha W, Shin J S, Oh K 2012 Opt. Lett. 37 623
[14] Liberale C, Cojoc G, Candeloro P, Das G, Gentile F, De Angelis F, Di Fabrizio E 2010 IEEE Photon. Technol. Lett. 22 474
[15] Grosjean T, Saleh S S, Suarez M A, Ibrahim I A, Piquerey V, Charraut D, Sandoz P 2007 Appl. Opt. 46 8061
[16] Cabrini S, Liberale C, Cojoc D, Carpentiero A, Prasciolu M, Mora S, Degiorgio V, De Angelis F, Di Fabrizio E 2006 Microelectron Eng. 83 804
[17] Eah S K, Jhe W, Arakawa Y 2003 Rev. Sci. Instrum. 74 4969
[18] Goodman J W 1996 Introduction to Fourier Optics (2nd Ed.) (New York: Mc-Graw Hill) p63
[19] Song Y J, Hu M L, Liu B W, Chai L, Wang Q Y 2008 Acta Phys. Sin. 57 6425 (in Chinese) [宋有建, 胡明列, 刘博文, 柴路, 王清月 2008 57 6425]
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