Dynamical origin of near- and below-threshold harmonic generation of Cs in an intense mid-infrared laser field

Nature Communications

Volumn 6, Issue , 2015, Pages

  Li, Peng Cheng ^a,b,c   Sheu, Yae Lin ^a   Laughlin, Cecil ^d   Chu, Shih I ^a,c  

^a NATIONAL TAIWAN UNIVERSITY   (Taiwan)

^b NORTHWEST NORMAL UNIVERSITY   (China)

^c UNIVERSITY OF KANSAS   (United States)

^d UNIVERSITY OF NOTTINGHAM   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

CESIUM ION;

CESIUM; HARMONIC ANALYSIS; LASER; QUANTUM MECHANICS;

AB INITIO CALCULATION; ARTICLE; ELECTRON TRANSPORT; LASER; MOLECULAR DYNAMICS; PHOTON ABSORPTIOMETRY; QUANTUM CHEMISTRY;

EID: 84930226973     PISSN: None     EISSN: 20411723     Source Type: Journal    
DOI: 10.1038/ncomms8178     Document Type: Article

References (31)

1. Chini, M., Zhao, K. & Chang, Z. H. The generation, characterization and applications of broadband isolated attosecond pulses. Nat. Photon. 8, 178-186 (2014).
2. Haessler, S. et al. Attosecond imaging of molecular electronic wavepackets. Nat. Phys. 6, 200-206 (2010).
3. Baker, S. et al. Probing proton dynamics in molecules on an attosecond time scale. Science 312, 424-427 (2006).
4. Itatani, J. et al. Tomographic imaging of molecular orbitals. Nature 432, 867-871 (2004).
5. Kienberger, R. et al. Steering attosecond electron wave packets with light. Science 297, 1144-1148 (2002).
6. Drescher, M. et al. Time-resolved atomic inner-shell spectroscopy. Nature 419, 803-807 (2002).
7. Henkel, J. et al. Prediction of attosecond light pulses in the VUV range in a high-order-harmonic-generation regime. Phys. Rev. A 87, 043818 (2013).
8. Takahashi, E. J., Lan, P., Mücke, O. D., Nabekawa, Y. & Midorikawa, K. Attosecond nonlinear optics using gigawatt-scale isolated attosecond pulses. Nat. Commun. 4, 2691 (2013).
9. Corkum, P. B. Plasma perspective on strong field multiphoton ionization. Phys. Rev. Lett. 71, 1994 (1993).
10. Kulander, K. C., Schafer, K. J. & Krause, J.L. in Proceedings of the Workshop on Super-Intense Laser Atom Physics (SILAP) III. (eds Piraux, P., Huillier, A. L & Rzazewski, J.) (Plenum Press, 1993).
11. Lewenstein, M., Salières, P. & L'Huillier, A. Phase of the atomic polarization in high-order harmonic generation. Phys. Rev. A 52, 4747 (1995).
12. Power, E. P. et al. XFROG phase measurement of threshold harmonics in a Keldysh-scaled system. Nat. Photon. 4, 352-356 (2010).
13. Yost, D. C. et al. Vacuum-ultraviolet frequency combs from below-threshold harmonics. Nat. Phys. 5, 815-820 (2009).
14. Hostetter, J. A., Tate, J. L., Schafer, K. J. & Gaarde, M. B. Semiclassical approaches to below-threshold harmonics. Phys. Rev. A 82, 023401 (2010).
15. Soifer, H. et al. Near-Threshold High-Order Harmonic Spectroscopy with Aligned Molecules. Phys. Rev. Lett. 105, 143904 (2010).
16. Chini, M. et al. Coherent phase-matched VUV generation by field-controlled bound states. Nat. Photon. 8, 437-441 (2014).
17. Xiong, W. H., Geng, J. W., Tang, J. Y., Peng, L. Y. & Gong, Q. H. Mechanisms of below-threshold harmonic generation in atoms. Phys. Rev. Lett. 112, 233001 (2014).
18. Brizuela, F. et al. Efficient high-order harmonic generation boosted by belowthreshold harmonics. Sci. Rep. 3, 1410 (2013).
19. Shafir, D. et al. Role of the Ionic Potential in High Harmonic Generation. Phys. Rev. Lett. 108, 203001 (2012).
20. Kato, K., Minemoto, S., Sakemi, Y. & Sakai, H. Phase differences of nearthreshold high-order harmonics generated in atoms and molecules. Phys. Rev. A 90, 063403 (2014).
21. Tong, X. M. & Chu, S. I. Theoretical study of multiple high-order harmonic generation by intense ultrashort pulsed laser fields: a new generalized pseudospectral time-dependent method. Chem. Phys. 217, 119-130 (1997).
22. Sheu, Y. L., Hsu, L. Y., Wu, H. T., Li, P. C. & Chu, S. I. A new time-frequency method to reveal quantum dynamics of hydrogen in intense laser pulses: synchrosqueezing transform. AIP Adv. 4, 117138 (2014).
23. Flandrin, P. Time-frequency/time-scale Analysis (Academic Press, 1999).
24. Chen, Y. C., Cheng, M. Y. &Wu, H. T. Non-parametric and adaptive modelling of dynamic periodicity and trend with heteroscedastic and dependent errors. J. R. Stat. Soc. Ser. B Stat. Methodol. 76, 651-682 (2014).
25. Suprunenko, Y. F., Clemson, P. T. & Stefanovska, A. Chronotaxic systems: a new class of self-sustained nonautonomous oscillators. Phys. Rev. Lett. 111, 024101 (2013).
26. Wu, H. T., Chan, Y. H., Lin, Y. T. & Yeh, Y. H. Using synchrosqueezing transform to discover breathing dynamics from ECG signals. Appl. Comput. Harmon. Anal. 36, 354-359 (2014).
27. Antoine, P., Piraux, B. & Maquet, A. Time profile of harmonics generated by a single atom in a strong electromagnetic field. Phys. Rev. A 51, R1750R (1995).
28. Tong, X. M. & Chu, S. I. Probing the spectral and temporal structures of highorder harmonic generation in intense laser pulses. Phys. Rev. A 61, 021802R (2000).
29. Chu, X., Chu, S. I. & Laughlin, C. Spectral and temporal structures of highorder harmonic generation of Na in intense mid-ir laser fields. Phys. Rev. A 64, 013406 (2001).
30. Chu, X. & Chu, S. I. Self-interaction-free time-dependent density-functional theory for molecular processes in strong fields: High-order harmonic generation of H2 in intense laser fields. Phys. Rev. A 63, 023411 (2001).
31. Li, P. C., Sheu, Y. L., Laughlin, C. & Chu, S. I. Role of laser-driven electronmultirescattering in resonance-enhanced below-threshold harmonic generation in He atoms. Phys. Rev. A 90, 041401R (2014).