All Optical Approaches in Attosecond Science

All Optical Approaches in Attosecond Science


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Date

February 10, 2014 - 10:00am

Location

Pettit Bldg. Conf.102 A & B

Attosecond pulses obtained through high harmonic generation have become a very important tool to study ultrafast phenomena in atoms, molecules, solids and nano-structures. Attosecond technologies required for the characterization of the attosecond pulses and the laser field have been greatly developed for the last decade. However, the conventional attosecond metrologies rely on the photoelectric effect which is slow and complicated, thus limiting applicable areas. In this talk, I discuss three all-optical techniques that can be used for the study of the ultrafast phenomena in attosecond science: Arbitrary optical waveform measurement [1], Space-time measurement of attosecond pulses [2], and Generation of multiple isolated attosecond pulses [3]. All-optical approaches offer very compact, efficient and fast ways to measure and control the ultrafast processes. It exploits the highly non-linear generation process of attosecond pulse generation. I expect other nonlinear interactions in nano-structures hold the prospect of attosecond gating, which would pave the way for attosecond electronic devices [2].

 

[1] K. T. Kim et al., “Manipulation of quantum paths for space-time characterization of attosecond pulses”, Nature Physics 9, 159–163 (2013).

[2] K. T. Kim et al., “Petahertz optical oscilloscope”, Nature Photonics 7, 958-962 (2013).

[3] K. T. Kim et al., “Photonic streaking of attosecond pulse trains”, Nature Photonics 7, 651–656 (2013).