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Title: Extreme ultraviolet transient absorption of solids from femtosecond to attosecond timescales

Journal Article · · Journal of the Optical Society of America. Part B, Optical Physics
 [1];  [1];  [2];  [3];  [4];  [5];  [6];  [2];  [7];  [7]
  1. Univ. of California, Berkeley, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Univ. of California, Berkeley, CA (United States); Ludwig-Maximilians-Univ., Garching (Germany)
  4. Univ. of California, Berkeley, CA (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
  5. Univ. of California, Berkeley, CA (United States); Technion–Israel Institute of Technology, Haifa (Israel)
  6. Univ. of California, Berkeley, CA (United States); Univ. of Oregon, Eugene, OR (United States)
  7. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

High-harmonic generation (HHG) produces ultrashort pulses of extreme ultraviolet radiation (XUV), which can be used for pump–probe transient absorption spectroscopy in metal oxides, semiconductors, and dielectrics. Femtosecond transient absorption on iron and cobalt oxides identifies ligand-to-metal charge transfer as the main spectroscopic transition, rather than metal-to-metal charge transfer or d–d transitions, upon photoexcitation in the visible. In silicon, attosecond transient absorption reveals that electrons tunnel into the conduction band from the valence band under strong-field excitation, to energies as high as 6 eV above the conduction band minimum. Here, the extensions of these experiments to other semiconductors, such as germanium, and other transition metal oxides, such as vanadium dioxide, are discussed. Germanium is of particular interest because it should be possible to follow both electron and hole dynamics in a single measurement using transient XUV absorption.

Research Organization:
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC04-94AL85000; AC02-05CH11231; FA9550-10-1-0195
OSTI ID:
1502120
Alternate ID(s):
OSTI ID: 1249773
Report Number(s):
SAND-2019-2819J; JOBPDE; 673424
Journal Information:
Journal of the Optical Society of America. Part B, Optical Physics, Vol. 33, Issue 7; ISSN 0740-3224
Publisher:
Optical Society of America (OSA)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 15 works
Citation information provided by
Web of Science

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Cited By (3)

Ultrafast carrier thermalization and trapping in silicon-germanium alloy probed by extreme ultraviolet transient absorption spectroscopy journal July 2017
Ultrafast molecular photophysics in the deep-ultraviolet journal February 2019
Signatures of a Conical Intersection in Attosecond Transient Absorption Spectroscopy journal July 2018