Experimental comparison of models for ultrafast impact ionization is silicon

Abebe Tilahun Tarekegne, Krzysztof Iwaszczuk, Peter Uhd Jepsen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


We compare experimentally the exponential and quadratic (Keldysh formula) impact ionization models using THz induced impact ionization in silicon. We demonstrate that the exponential model offers the best description of impact ionization process for ultrashort electric filed pulses.
Original languageEnglish
Title of host publication2016 Conference on Lasers and Electro-Optics
Number of pages2
PublisherOptical Society of America (OSA)
Publication date2016
ISBN (Print)9781943580118
Publication statusPublished - 2016
EventConference on Lasers and Electro-Optics 2016 - San Jose, California, United States
Duration: 5 Jun 201610 Jun 2016


ConferenceConference on Lasers and Electro-Optics 2016
Country/TerritoryUnited States
CitySan Jose, California
Series2016 Conference on Lasers and Electro-optics (cleo)


  • Impact ionization
  • Silicon
  • Probes
  • Adaptation models
  • Electric fields
  • Dipole antennas
  • Antenna measurements


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