Femtosecond-scale response of GaAs to ultrafast laser pulses Academic Article

abstract

• We present nonadiabatic simulations of the coherent response of crystalline GaAs irradiated by intense femtosecond-scale laser pulses. Above a threshold fluence, which corresponds to promotion of about 12% of the valence electrons into the conduction band, the lattice is destabilized and the electronic band gap collapses to zero. This confirms the nonthermal nature of recently observed structural changes driven by electronic excitations and occurring during the first few hundred femtoseconds.

authors

• Allen, Roland

published proceedings

• PHYSICAL REVIEW B

author list (cited authors)

• Dumitrica, T., & Allen, R. E.

citation count

• 35

complete list of authors

• Dumitrica, T||Allen, RE

publication date

• August 2002

publisher

• American Physical Society (APS)  Publisher

keywords

• 34 Chemical Sciences
• 3406 Physical Chemistry
• 51 Physical Sciences
• 5108 Quantum Physics

Digital Object Identifier (DOI)

• 10.1103/PhysRevB.66.081202

URI

• http://dx.doi.org/10.1103/PhysRevB.66.081202

start page

• 081202

end page

• 812024

volume

• 66

issue

• 8

URL

• http://dx.doi.org/10.1103/physrevb.66.081202