基于瞬态光栅频率分辨光学开关装置的阿秒延时相位控制
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摘要
操控多路激光脉冲之间的相对延时(相对相位)对于亚周期相干合成技术意义重大.当周期量级脉冲之间的相对延时接近数十飞秒时,常见的飞秒脉冲测量手段已无法满足脉冲之间相对相位的精确调控需求.本文基于瞬态光栅频率分辨光学开关装置,精确反演出脉冲之间的相对相位.此方案不仅有助于直接产生亚周期(亚飞秒)脉冲,还可应用于时间隐身学和二维相干光谱学等相关领域.
The accurate and precise controlling of the attosecond time delay between the sub-pulses within a hundredth of an optical cycle is the key ingredient for the sophisticated custom-tailored coherent waveform synthesizer. The attosecond delay control technique commonly experiences the "complete" characterization of the ultrashort sub-cycle pulses, which includes the spatiotemporal pulse characterization of the synthesized waveform and the attosecond relative delay between the parent pulses. In this work, the relative time delay between spectrally separated ultrashort parent pulses is characterized in an interferometer scheme with a background-free transient-grating frequency-resolved optical grating(TG-FROG). The TG-FROG geometry accurately measures the full time-dependent intensity and phase of ultrashort laser pulses in a wide range of regime(from ultraviolet to infrared) and offers significant advantages over other nonlinear-optical processes geometries(i.e., the polarization-gate-FROG, the self-diffraction-FROG, the second-harmonic generation-FROG and the third-harmonic-generation-FROG). The attosecond measurement accuracy is achieved for the first time, to the best of our knowledge. In this experiment, the output of a carrier-envelope-phase-stable Ti:sapphire amplifier(sub-30-fs, over-1-mJ, 1 kHz) is spectrally broadened in a neon-filled hollow-core fiber with an inner diameter of250 μm. The transmission through the pressure-gradient hollow-core fiber results in an mJ-level octave-spanning whitelight supercontinuum, supporting a sub-3-fs Fourier transform-limited pulse. The supercontinuum is spectrally divided into two parent pulses by using a dichroic mirror. The sub-pulses are individually compressed by the custom-designed double-chirped mirrors and wedge pairs. The short and long wavelength pulses are separately compressed in few-cycle regime, yielding pulses with 6.7 fs and 9.8 fs, respectively. This technique overcomes the bottlenecks in the traditional delay measurement and should be applicable for many ultra-broadband pulse characterizations with extremely simple and alignment-free delay control device used. Furthermore, this new method will be easily adapted for the ultra-broadband two-dimensional electronic spectroscopy, the advanced temporal cloaking, and the field of sub-cycle arbitrary coherent waveform synthesizer for controlling strong-field interactions in atoms, molecules, solids, and nanostructures. We foresee that in the near future this novel technology will be very attractive for various applications in the next-generation light sources such as the Synergetic Extreme Condition User Facility in Beijing, China.
The accurate and precise controlling of the attosecond time delay between the sub-pulses within a hundredth of an optical cycle is the key ingredient for the sophisticated custom-tailored coherent waveform synthesizer. The attosecond delay control technique commonly experiences the "complete" characterization of the ultrashort sub-cycle pulses, which includes the spatiotemporal pulse characterization of the synthesized waveform and the attosecond relative delay between the parent pulses. In this work, the relative time delay between spectrally separated ultrashort parent pulses is characterized in an interferometer scheme with a background-free transient-grating frequency-resolved optical grating(TG-FROG). The TG-FROG geometry accurately measures the full time-dependent intensity and phase of ultrashort laser pulses in a wide range of regime(from ultraviolet to infrared) and offers significant advantages over other nonlinear-optical processes geometries(i.e., the polarization-gate-FROG, the self-diffraction-FROG, the second-harmonic generation-FROG and the third-harmonic-generation-FROG). The attosecond measurement accuracy is achieved for the first time, to the best of our knowledge. In this experiment, the output of a carrier-envelope-phase-stable Ti:sapphire amplifier(sub-30-fs, over-1-mJ, 1 kHz) is spectrally broadened in a neon-filled hollow-core fiber with an inner diameter of250 μm. The transmission through the pressure-gradient hollow-core fiber results in an mJ-level octave-spanning whitelight supercontinuum, supporting a sub-3-fs Fourier transform-limited pulse. The supercontinuum is spectrally divided into two parent pulses by using a dichroic mirror. The sub-pulses are individually compressed by the custom-designed double-chirped mirrors and wedge pairs. The short and long wavelength pulses are separately compressed in few-cycle regime, yielding pulses with 6.7 fs and 9.8 fs, respectively. This technique overcomes the bottlenecks in the traditional delay measurement and should be applicable for many ultra-broadband pulse characterizations with extremely simple and alignment-free delay control device used. Furthermore, this new method will be easily adapted for the ultra-broadband two-dimensional electronic spectroscopy, the advanced temporal cloaking, and the field of sub-cycle arbitrary coherent waveform synthesizer for controlling strong-field interactions in atoms, molecules, solids, and nanostructures. We foresee that in the near future this novel technology will be very attractive for various applications in the next-generation light sources such as the Synergetic Extreme Condition User Facility in Beijing, China.
引文
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[2] Huang S W, Cirmi G, Moses J, Hong K H, Bhardwaj S, Birge J R, Chen L J, Li E, Eggleton B J, Cerullo G,Kartner F X 2011 Nat. Photon. 5 475
[3] Manzoni C, Mucke O D, Cirmi G, Fang S, Moses J,Huang S W, Hong K H, Cerullo G, Kartner F X 2015Laser Photon. Rev. 9 129
[4] Mucke O D, Fang S B, Cirmi G, Maria Rossi G, Chia S H, Ye H, Yang Y D, Mainz R, Manzoni C, Farinello P,Cerullo G, Kartner F X 2015 IEEE J. Sel. Top. Quantum Eletron. Electron. 21 8700712
[5] Fang S, Cirmi G, Chia S, Mucke O D, K?rtner F X,Manzoni C, Farinello P, Cerullo G 2013 Conference on Lasers and Electro-Optics Pacific Rim(OSA)Kyoto,Japan, June 30–July 4, 2013 pWB3_1
[6] Schmid B E, Thire N, Boivin M, Laramee A, Poitras F, Lebrun G, Ozaki T, Ibrahim H, Legare F 2014 Nat.Commun. 5 3643
[7] Krogen P, Suchowski H, Liang H, Flemens N, Hong K H, K?rtner F X, Moses J 2017 Nat. Photon. 11 222
[8] Fang S, Tanigawa T, Ishikawa K L, Karasawa N, Yamashita M 2011 J. Opt. Soc. Am. B 28 1
[9] Wei P F, Miao J, Zeng Z N, Li C, Ge X C, Li R X, Xu Z Z 2013 Phys. Rev. Lett. 110 233903
[10] Takahashi E J, Lan P, Mucke O D, Nabekawa Y, Midorikawa K 2013 Nat. Commun. 4 2691
[11] Jin C, Wang G, Wei H, Le A T, Lin C D 2014 Nat.Commun. 5 4003
[12] Hassan M T, Wirth A, Grguras I, Moulet A, Luu T T,Gagnon J, Pervak V, Goulielmakis E 2012 Rev. Sci. Instrum. 83 111301
[13] Schibli T R, Kim J, Kuzucu O, Gopinath J T, Tandon S N, Petrich G S, Kolodziejski L A, Fujimoto J G, Ippen E P, Kaertner F X 2003 Opt. Lett. 28 947
[14] Manzoni C, Huang S W, Cirmi G, Farinello P, Moses J,K?rtner F X, Cerullo G 2012 Opt. Lett. 37 1880
[15] Fang S, Mainz R, Rossi G M, Yang Y, Cirmi G, Chia S, Manzoni C, Cerullo G, Mucke O D, Kartner F X 2015 European Conference on Lasers and ElectroOptics-European Quantum Electronics Conference Munich, Germany, June 21–25, 2015 p CG_P_4
[16] Sweetser J N, Fittinghoff D N, Trebino R 1997 Opt. Lett.22 519
[17] Trebino R, DeLong K W, Fittinghoff D N, Sweetser J N,Krumbugel M A, Richman B A 1997 Rev. Sci. Instrum.68 3277
[18] Liu J, Li F J, Jiang Y L, Li C, Leng Y X, Kobayashi T,Li R X, Xu Z Z 2012 Opt. Lett. 37 4829
[19] Zhu W D, Wang R, Zhang C F, Wang G D, Liu Y L,Zhao W, Dai X C, Wang X Y, Cerullo G, Cundiff S,Xiao M 2017 Opt. Express 25 21115
[20] Fridman M, Farsi A, Okawachi Y, Gaeta A L 2012 Nature 481 62