Controlling the XUV Transparency of Helium Using Two-Pathway Quantum Interference

Journal Article · Fri May 13 00:00:00 EDT 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.106.193008· OSTI ID:21538333

Ranitovic, P; Hogle, C W; Zhou, X; Murnane, M M; Kapteyn, H C ^[1]; Tong, X M ^[2]; Liu, Y ^[3]; Toshima, N ^[2]

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1. JILA and Department of Physics, University of Colorado and NIST, Boulder, Colorado 80309 (United States)
2. Institute of Materials Science, University of Tsukuba, Ibaraki 305-8573 (Japan)
3. College of Engineering, University of California at Berkeley, California 94720 (United States)

Atoms irradiated with combined femtosecond laser and extreme ultraviolet (XUV) fields ionize through multiphoton processes, even when the energy of the XUV photon is below the ionization potential. However, in the presence of two different XUV photons and an intense laser field, it is possible to induce full electromagnetic transparency. Taking helium as an example, the laser field modifies its electronic structure, while the presence of two different XUV photons and the laser field leads to two distinct ionization pathways that can interfere destructively. This work demonstrates a new approach for coherent control in a regime of highly excited states and strong optical fields.

• OSTI ID: 21538333
• Journal Information: Physical Review Letters, Vol. 106, Issue 19; Other Information: DOI: 10.1103/PhysRevLett.106.193008; (c) 2011 American Institute of Physics; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ELECTRONIC STRUCTURE
EXCITED STATES
EXTREME ULTRAVIOLET RADIATION
HELIUM
INTERFERENCE
IONIZATION
IONIZATION POTENTIAL
LASER RADIATION
LASERS
MULTI-PHOTON PROCESSES
OPACITY
PHOTONS
BOSONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ELEMENTS
ENERGY LEVELS
FLUIDS
GASES
MASSLESS PARTICLES
NONMETALS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
RARE GASES
ULTRAVIOLET RADIATION