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Title: N2 HOMO-1 orbital cross section revealed through high-order-harmonic generation

Journal Article · · Physical Review A
 [1];  [2];  [3];  [4];  [5];  [5]
  1. Kansas State Univ., Manhattan, KS (United States). James R. Macdonald Lab.; Johann Wolfgang Goethe Univ., Frankfurt (Germany). Inst. fur Kernphysik; DOE/OSTI
  2. Kansas State Univ., Manhattan, KS (United States). James R. Macdonald Lab.; Univ. of Central Florida, Orlando, FL (United States). College of Optics and Photonics, Center for Research and Education in Optics and Lasers (CREOL), Inst. for the Frontier of Attosecond Science and Technology
  3. Kansas State Univ., Manhattan, KS (United States). James R. Macdonald Lab.; Univ. of Ottawa, ON (Canada)
  4. Kansas State Univ., Manhattan, KS (United States). James R. Macdonald Lab.; ELI-Hu Kft., Szeged (Hungary)
  5. Kansas State Univ., Manhattan, KS (United States). James R. Macdonald Lab.
+ Show Author Affiliations

In this work, we measure multi-orbital contributions to high harmonic generation from aligned nitrogen. We show that the change in revival structure in the cutoff harmonics has a counterpart in the angular distribution when a lower-lying orbital contributes to the harmonic yield. This angular distribution is directly observed in the laboratory without any further deconvolution. Because of the high degree of alignment we are able to distinguish angular contributions of the highest occupied molecular orbital 1 (HOMO-1) orbital from angle-dependent spectroscopic features of the HOMO. In particular, we are able to make a direct comparison with the cross section of the HOMO-1 orbital in the extreme ultraviolet region.

Research Organization:
Kansas State Univ., Manhattan, KS (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
FG02-86ER13491
OSTI ID:
1535731
Alternate ID(s):
OSTI ID: 1347808
Journal Information:
Physical Review A, Journal Name: Physical Review A Journal Issue: 3 Vol. 95; ISSN 2469-9926
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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