Electronic coherent anti-Stokes Raman spectroscopy in CeF sub 3

Journal Article · Sun Sep 01 04:00:00 EDT 1991 · Journal of the Optical Society of America, Part B: Optical Physics; (United States)

DOI:https://doi.org/10.1364/JOSAB.8.001889· OSTI ID:5254108

Piehler, D ^[1]

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1. Department of Physics, University of California, Berkeley, Berkeley, California (USA) Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California (USA)

The coherent anti-Stokes Raman spectroscopy (CARS) of electronic states of the Ce{sup 3+} ion in a CeF{sub 3} crystal at 3.8 K is reported. CARS resonances involving the ground state of the {sup 2}{ital F}{sub 5/2} manifold and the Stark components of the {sup 2}{ital F}{sub 7/2} manifold at 2161 and 2239 cm{sup {minus}1} have been detected. Measurements were made with both visible ({lambda}{sub 1}{approx}476 nm, {lambda}{sub 2}=532 nm) and near-ultraviolet ({lambda}{sub 1}=355 nm, {lambda}{sub 2}{approx}385 nm) lasers. The enhancement of the third-order susceptibility owing to the electronic transitions, {vert bar}{chi}{sup (3){ital R}}/{chi}{sup (3)NR}{vert bar}{sub max}, is as great as 4.8. This represents an order-of-magnitude increase over that in singly resonant electronic CARS experiments in other rare-earth crystals. The CARS data also yielded accurate measurements of the Ce{sup 3+} electronic Raman cross sections. In the visible region, {sigma}{sub {ital zz}}(2161 cm{sup {minus}1})=(5.0{plus minus}1.1){times}10{sup {minus}30} cm{sup 2} and {sigma}{sub {ital zz}}(2239 cm{sup {minus}1})=(1.9{plus minus}0.7){times}10{sup {minus}30} cm{sup 2}. One could calculate both the absolute magnitude and the dispersion of {vert bar}{chi}{sup (3){ital R}}{vert bar}{sub max} by modeling the virtual intermediate states as a single degenerate 5{ital d} state at 45 000 cm{sup {minus}1}.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5254108
• Journal Information: Journal of the Optical Society of America, Part B: Optical Physics; (United States), Journal Name: Journal of the Optical Society of America, Part B: Optical Physics; (United States) Vol. 8:9; ISSN JOBPD; ISSN 0740-3224
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
CERIUM COMPOUNDS
CERIUM FLUORIDES
CERIUM IONS
CHARGED PARTICLES
COHERENT RADIATION
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
IONS
LASER SPECTROSCOPY
RADIATIONS
RAMAN SPECTROSCOPY
RARE EARTH COMPOUNDS
SPECTROSCOPY
ULTRALOW TEMPERATURE
ULTRAVIOLET RADIATION
VISIBLE RADIATION