Tailoring plasmonic field within two-color laser using metallic nanostructure for the generation of high harmonics

We have proposed a metallic dipole-ellipsoid-bagel nanostructure for the generation of high harmonics via two-color laser field. Comparing with the case of the one-color field, this nanostructure enables a broader bandwidth and smoother harmonic spectra under the condition of the two-color incidence field, which is in favor of the generation of extreme-ultraviolet (XUV) radiation and isolated attosecond pulses. Numerical techniques are employed to optimize nanoantennas and attain enhanced plasmonic field. The electromagnetic properties of this nanostructure is fully analyzed and discussed. The nanostructure support the highest enhancement fact of 2500 for both of 800-nm and 1500-nm incidence, and effectively enhance the field intensity exceed 103 in the volumn of 50×50×50 nm3.This nanostructure would benefit for the generation of high-harmonic, extreme-ultraviolet (XUV) radiation via plasmonic enhanced filed in a two-color multi-cycle laser field. This work would have potential application in the ultra-sensitive color sensor and the source of isolated attosecond pulses via multicycle laser.

[1]  Yuan Wang,et al.  Member expansion in quantum (t,n) threshold secret sharing schemes , 2011 .

[2]  Lin Xuechun,et al.  The generation of MHz isolated XUV attosecond pulses by plasmonic enhancement in a tailored symmetric Ag cross nanoantenna with a few-cycle laser , 2013 .

[3]  Young-Jin Kim,et al.  Plasmonic generation of ultrashort extreme-ultraviolet light pulses , 2011 .

[4]  Jun Ye,et al.  Efficient output coupling of intracavity high-harmonic generation. , 2008, Optics letters.

[5]  Ferenc Krausz,et al.  Optimization and characterization of a highly-efficient diffraction nanograting for MHz XUV pulses. , 2011, Optics express.

[6]  Ferenc Krausz,et al.  Attosecond Nanoplasmonic Field Microscope , 2007 .

[7]  In-Yong Park,et al.  High-harmonic generation by resonant plasmon field enhancement , 2008, Nature.

[8]  In-Yong Park,et al.  Kim et al. reply , 2012, Nature.

[9]  X. Duan,et al.  Steering the optical response with asymmetric bowtie 2-color controllers in the visible and near infrared range , 2011 .

[10]  S. L. Stebbings,et al.  Optimization of the Field Enhancement and Spectral Bandwidth of Single and Coupled Bimetal Core–Shell Nanoparticles for Few-Cycle Laser Applications , 2012, Plasmonics.

[11]  S. L. Stebbings,et al.  High-harmonic and single attosecond pulse generation using plasmonic field enhancement in ordered arrays of gold nanoparticles with chirped laser pulses. , 2013, Optics express.

[12]  P. Corkum,et al.  Plasma perspective on strong field multiphoton ionization. , 1993, Physical review letters.

[13]  E. Palik.  Handbook of Optical Constants of Solids , 1997 .

[14]  M. Vrakking,et al.  Polarization gating and circularly-polarized high harmonic generation using plasmonic enhancement in metal nanostructures. , 2011, Optics express.

[15]  C. Ropers,et al.  Nanostructure-enhanced atomic line emission , 2012, Nature.