Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Topics in applied physics

The puzzle of two-photon rare earth spectra in solids

M. C. Downer

Published Jan 1, 1989• 19 citations
Publisher
DOI
10.1007/3540501541_2

Related papers

The solved puzzle of two-photon rare earth spectra in solids

N. Bloembergen

Journal of Luminescence•Dec 1, 1984•20 citations

Paper 4.6: N. Bloembergen, “The solved puzzle of two-photon rare earth spectra in solids,” Journal of Luminescence 31 and 32, 23–28, 1984.

World Scientific series in 20th century physics•Sep 1, 1996•0 citations

Two-photon spectroscopy of rare-earth ions in crystals

A. G. Makhanek, R. I. Gintoft, L. A. Dzhuguryan +2 more

Journal of Applied Spectroscopy•Jun 1, 1984•2 citations

One-photon rare earth optical transitions: recent theoretical developments

Gary W. Burdick, M. C. Downer

Springer eBooks•Jan 1, 1993•1 citation

Application of two-photon spectroscopy in the study of trivalent rare-earth ions in crystals

A. G. Makhanek, G. A. Skripko

To study the role of stepwise and relaxation processes under effective excitation of anti-Stokes luminescence of rare-earth (RE) ions in crystals the time-shifted pulse method is used. It is shown that direct comparison of measured single- and two-photon luminescence excitation spectra often enables one to make immediate conclusions on the position and classification of electron levels of RE ions. The Tb3+ and Eu3− level structures (crystal CaF2) in the near ultraviolet are considered as an example. The peculiarities connected with the polarization characteristics of the two-photon absorption of radiation by the trivalent RE ions in a crystal matrix are discussed. To obtain the two-photon spectra a frequency-tunable organic dye solution laser (ODSL) is used.

physica status solidi (a)•May 16, 1979•28 citations

Two‐Photon Excitation Spectra of Trivalent Rare‐Earth Ion Luminescence in Crystals

Pavel A Apanasevich, R. I. Gintoft, V. S. Korol'kov +2 more

Abstract Theoretical and experimental investigations are made of two‐photon absorption spectra of trivalent rare‐earth ions in crystals. Effective cross‐sections, selection rules, and relative intensities of the components are found. The most intensive two‐photon transitions are established. Two‐photon excitation spectra of luminescence of Er3+ and Ho3+ ions in CaF2 are obtained and effective excitation cross‐sections are measured using a tunable dye laser (715 to 850 nm). It is shown that the spectra have a peculiar structure which differs considerably from that of the one‐photon absorption spectra. The experimental results agree with theory. It is established that one of the levels in Ho3+ is the level 5G6 rather than 3K7 usually assumed.

physica status solidi (b)•Aug 1, 1973•41 citations
To study the role of stepwise and relaxation processes under effective excitation of anti-Stokes luminescence of rare-earth (RE) ions in crystals the time-shifted pulse method is used. It is shown that direct comparison of measured single- and two-photon luminescence excitation spectra often enables one to make immediate conclusions on the position and classification of electron levels of RE ions. The Tb3+ and Eu3− level structures (crystal CaF2) in the near ultraviolet are considered as an example. The peculiarities connected with the polarization characteristics of the two-photon absorption of radiation by the trivalent RE ions in a crystal matrix are discussed. To obtain the two-photon spectra a frequency-tunable organic dye solution laser (ODSL) is used.
Abstract Theoretical and experimental investigations are made of two‐photon absorption spectra of trivalent rare‐earth ions in crystals. Effective cross‐sections, selection rules, and relative intensities of the components are found. The most intensive two‐photon transitions are established. Two‐photon excitation spectra of luminescence of Er3+ and Ho3+ ions in CaF2 are obtained and effective excitation cross‐sections are measured using a tunable dye laser (715 to 850 nm). It is shown that the spectra have a peculiar structure which differs considerably from that of the one‐photon absorption spectra. The experimental results agree with theory. It is established that one of the levels in Ho3+ is the level 5G6 rather than 3K7 usually assumed.