One photon was known to be able to excite two Pr/sup 3+/ ions to different levels, one of which was always /sup 3/Po as detected by fluorescence. Using crystals of pure PrCl/sub 3/, 90 absorption lines corresponding to ion pair absorption were detected in the region between 22, 220, and 28,100 cm/sup -1/. Classifications and wave numbers of the lines are given. The lines show no polarization, and most of their frequencies can be written as the sum of two ordinary absorption frequencies. The width of the lines is about 6 cm/sup -1/. (D.C.W.)One photon was known to be able to excite two Pr/sup 3+/ ions to different levels, one of which was always /sup 3/Po as detected by fluorescence. Using crystals of pure PrCl/sub 3/, 90 absorption lines corresponding to ion pair absorption were detected in the region between 22, 220, and 28,100 cm/sup -1/. Classifications and wave numbers of the lines are given. The lines show no polarization, and most of their frequencies can be written as the sum of two ordinary absorption frequencies. The width of the lines is about 6 cm/sup -1/. (D.C.W.)

Physical Review LettersJul 1, 196325 citations

4f2 to 4f5d excited state absorption in Pr3+-doped crystals

S Nicolas, E Descroix, Yannick Guyot +5 more

Optical MaterialsFeb 1, 200129 citations

Spectral energy transfer in Pr F3 , Pr Cl3

D. S. Hamilton, Peter M. Selzer, William M. Yen

Time-resolved fluorescence line narrowing is used to study spectral energy transfer in Pr ${\mathrm{F}}_{3}$ and Pr ${\mathrm{Cl}}_{3}$ . The excitation spectrum of Pr ${\mathrm{F}}_{3}$ in the region of the ${(^{3}H_{4})}_{1}\ensuremath{\rightarrow}^{3}P_{0}$ absorption indicates that several strong satellite lines accompany the main transition, their origin being ascribed to different ${\mathrm{Pr}}^{3+}$ ions lying in strongly perturbed lattice sites. The spectral transfer within the inhomogeneously broadened main transiton is measured, where the energy mismatch is about 2 ${\mathrm{cm}}^{\ensuremath{-}1}$. This process is characterized by a strong ($\ensuremath{\sim}{T}^{4.3}$) dependence of the transfer probability on sample temperature. The growth of the full inhomogeneous emission profile accompanies a uniform decay of the donor line shape. A transfer process between the lowest-energy satellite ions is also measured. Here the energy mismatch is 32 ${\mathrm{cm}}^{\ensuremath{-}1}$ resulting in a weak temperature dependence for the transfer rate. Both the intraline and intersatellite transfer are characterized by simple exponential rate equations. Recent calculations of phonon-assisted transfer probabilities are compared to our measurements, with the intersatellite transfer ascribed to a "one-phonon direct" process whereas the transfer within the main transition occurs by a "one-phonon second-order" mechanism. In Pr ${\mathrm{Cl}}_{3}$ the transfer times are faster than the 15-nsec response time of our detection system indicating a much stronger ion-ion coupling.Time-resolved fluorescence line narrowing is used to study spectral energy transfer in Pr${\mathrm{F}}_{3}$ and Pr${\mathrm{Cl}}_{3}$. The excitation spectrum of Pr${\mathrm{F}}_{3}$ in the region of the ${(^{3}H_{4})}_{1}\ensuremath{\rightarrow}^{3}P_{0}$ absorption indicates that several strong satellite lines accompany the main transition, their origin being ascribed to different ${\mathrm{Pr}}^{3+}$ ions lying in strongly perturbed lattice sites. The spectral transfer within the inhomogeneously broadened main transiton is measured, where the energy mismatch is about 2 ${\mathrm{cm}}^{\ensuremath{-}1}$. This process is characterized by a strong ($\ensuremath{\sim}{T}^{4.3}$) dependence of the transfer probability on sample temperature. The growth of the full inhomogeneous emission profile accompanies a uniform decay of the donor line shape. A transfer process between the lowest-energy satellite ions is also measured. Here the energy mismatch is 32 ${\mathrm{cm}}^{\ensuremath{-}1}$ resulting in a weak temperature dependence for the transfer rate. Both the intraline and intersatellite transfer are characterized by simple exponential rate equations. Recent calculations of phonon-assisted transfer probabilities are compared to our measurements, with the intersatellite transfer ascribed to a "one-phonon direct" process whereas the transfer within the main transition occurs by a "one-phonon second-order" mechanism. In Pr${\mathrm{Cl}}_{3}$ the transfer times are faster than the 15-nsec response time of our detection system indicating a much stronger ion-ion coupling.

Physical review. B, Solid stateSep 1, 197762 citations

Optical Spectroscopy of an Erbium-Doped Crystal

Optische Spektroskopie

Jan 1, 20130 citations

Time-resolved fluorescence line narrowing is used to study spectral energy transfer in Pr

{\mathrm{F}}_{3}

and Pr

{\mathrm{Cl}}_{3}

. The excitation spectrum of Pr

{\mathrm{F}}_{3}

in the region of the ${(^{3}H_{4})}_{1}\ensuremath{\rightarrow}^{3}P_{0}$ absorption indicates that several strong satellite lines accompany the main transition, their origin being ascribed to different

{\mathrm{Pr}}^{3+}

ions lying in strongly perturbed lattice sites. The spectral transfer within the inhomogeneously broadened main transiton is measured, where the energy mismatch is about 2 ${\mathrm{cm}}^{\ensuremath{-}1}$. This process is characterized by a strong ($\ensuremath{\sim}{T}^{4.3}$) dependence of the transfer probability on sample temperature. The growth of the full inhomogeneous emission profile accompanies a uniform decay of the donor line shape. A transfer process between the lowest-energy satellite ions is also measured. Here the energy mismatch is 32 ${\mathrm{cm}}^{\ensuremath{-}1}$ resulting in a weak temperature dependence for the transfer rate. Both the intraline and intersatellite transfer are characterized by simple exponential rate equations. Recent calculations of phonon-assisted transfer probabilities are compared to our measurements, with the intersatellite transfer ascribed to a "one-phonon direct" process whereas the transfer within the main transition occurs by a "one-phonon second-order" mechanism. In Pr

{\mathrm{Cl}}_{3}

the transfer times are faster than the 15-nsec response time of our detection system indicating a much stronger ion-ion coupling.