Chapter

Ultrafast Phenomena XVI

Volume 92 of the series Springer Series in Chemical Physics pp 651-653

Date:

Nonlinear Lattice Response Observed Through Terahertz SPM

  • János HeblingAffiliated withDepartment of Chemistry, Massachusetts Institute of TechnologyDepartment of Experimental Physics, University of Pécs Email author 
  • , Matthias C. HoffmannAffiliated withDepartment of Chemistry, Massachusetts Institute of Technology
  • , Ka-Lo YehAffiliated withDepartment of Chemistry, Massachusetts Institute of Technology
  • , György TóthAffiliated withDepartment of Experimental Physics, University of Pécs
  • , Keith A. NelsonAffiliated withDepartment of Chemistry, Massachusetts Institute of Technology

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Abstract

Self-phase-modulation of ultrashort THz pulses was observed in lithium niobate at the 100 MW/cm2 intensity level. The effect, observed in time and frequency domains, suggests 1000x larger nonlinear index n2 than at visible wavelengths.