AIP conference proceedings

Spectroscopy, relaxation, and laser action in Pr3+:LaF3

R. Kichinski, Fred Moshary, Sven R. Hartmann

Published Jan 1, 1986• 4 citations

Abstract

The photon echo technique was used to investigate the 3P0‐3H6 (5985Å) and the two 3P0‐3H5 (5333.0 Å 5333.5 Å) transitions in Pr3+:LaF3 at 4.6 K. On the 3P0‐3H6 transition, the data displayed modulation and spanned a dynamic range of nine decades in intensity. Echo relaxation rates were anomalously fast in view of previous experiments in this sample. We also report observation of ‘Satellite Echoes’ on the satellite lines of the 3P0‐3H4(4778 Å) transition and present photon echo data obtained on one of the satellite lines. Lasing was observed at 4.6 K and at 77 K during pulse excitation of the 3P0‐3H4 and 3P1(2I6)‐3H4(4633 Å) transitions.

DOI: 10.1063/1.35708

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AIP conference proceedings

Spectroscopy, relaxation, and laser action in Pr3+:LaF3

R. Kichinski, Fred Moshary, Sven R. Hartmann

Published Jan 1, 1986• 4 citations

Publisher

Abstract

DOI: 10.1063/1.35708

Related papers

Phonon-Induced Transverse Relaxation in LaF3:Pr3+ Measured by Photon Echoes

T. Kohmoto, Hiroki Nakatsuka, Masahiro Matsuoka

Temperature dependences of backward photon echo intensity have been measured from 5°K to 13°K on the 3P0–3H4 (4778 Å) and 1D2–3H4 (5925 Å) transitions of LaF3:Pr3+. Over six orders of magnitude (on the 3P0–3H4 transition) and three orders of magnitude (on the 1D2–3H4 transition) of the photon echo intensity, the experimental results are explained by the one-phonon process (the direct process) taking into account the energy differences between the echo levels and their adjacent levels. Preliminary measurements have also been made on the 4G7/2–4I9/2 (5221 Å) and 4G5/2–4I9/2 (5775 Å) transitions of LaF3:Nd3+.Temperature dependences of backward photon echo intensity have been measured from 5°K to 13°K on the 3P0–3H4 (4778 Å) and 1D2–3H4 (5925 Å) transitions of LaF3:Pr3+. Over six orders of magnitude (on the 3P0–3H4 transition) and three orders of magnitude (on the 1D2–3H4 transition) of the photon echo intensity, the experimental results are explained by the one-phonon process (the direct process) taking into account the energy differences between the echo levels and their adjacent levels. Preliminary measurements have also been made on the 4G7/2–4I9/2 (5221 Å) and 4G5/2–4I9/2 (5775 Å) transitions of LaF3:Nd3+.

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Spectroscopy and multiwave mixing in Pr3+ : LaF3

Fred Moshary, R. Kichinski, Raymond John Beach +1 more

Photon-echo and stimulated-photon-echo experiments in ${\mathrm{Pr}}^{3+}$ : ${\mathrm{LaF}}_{3}$ on the three transitions, $^{3}\mathrm{P}_{0}$ - ${(}^{3}$ ${\mathrm{H}}_{5}$ ${)}_{1}$ , $^{3}\mathrm{P}_{0}$ - ${(}^{3}$ ${\mathrm{H}}_{5}$ ${)}_{2}$ , and $^{3}\mathrm{P}_{0}$ - ${(}^{3}$ ${\mathrm{H}}_{6}$ ${)}_{1}$ [none of which, therefore, involves the ${(}^{3}$ ${\mathrm{H}}_{4}$ ${)}_{1}$ ground state] at liquid-He temperatures have revealed the presence of anomalously large residual homogeneous linewidths. The subscripts (e.g., 1,2) denote the crystal-field-split levels of the ${\mathrm{Pr}}^{3+}$ ion states. Amplitude-modulated trilevel echoes were observed involving the $^{3}\mathrm{P}_{0}$ - ${(}^{3}$ ${\mathrm{H}}_{5}$ ${)}_{1}$ and $^{3}\mathrm{P}_{0}$ - ${(}^{3}$ ${\mathrm{H}}_{5}$ ${)}_{2}$ transitions while no trilevel echoes were observed involving the $^{3}\mathrm{P}_{0}$ - ${(}^{3}$ ${\mathrm{H}}_{4}$ ${)}_{1}$ and $^{3}\mathrm{P}_{0}$ - ${(}^{3}$ ${\mathrm{H}}_{6}$ ${)}_{1}$ transitions. Photon echoes were observed on many of the satellite lines of the principal resonance $^{3}\mathrm{P}_{0}$ - ${(}^{3}$ ${\mathrm{H}}_{4}$ ${)}_{1}$ transitions.Photon-echo and stimulated-photon-echo experiments in ${\mathrm{Pr}}^{3+}$:${\mathrm{LaF}}_{3}$ on the three transitions, $^{3}\mathrm{P}_{0}$-${(}^{3}$${\mathrm{H}}_{5}$${)}_{1}$, $^{3}\mathrm{P}_{0}$-${(}^{3}$${\mathrm{H}}_{5}$${)}_{2}$, and $^{3}\mathrm{P}_{0}$-${(}^{3}$${\mathrm{H}}_{6}$${)}_{1}$ [none of which, therefore, involves the ${(}^{3}$${\mathrm{H}}_{4}$${)}_{1}$ ground state] at liquid-He temperatures have revealed the presence of anomalously large residual homogeneous linewidths. The subscripts (e.g., 1,2) denote the crystal-field-split levels of the ${\mathrm{Pr}}^{3+}$ ion states. Amplitude-modulated trilevel echoes were observed involving the $^{3}\mathrm{P}_{0}$-${(}^{3}$${\mathrm{H}}_{5}$${)}_{1}$ and $^{3}\mathrm{P}_{0}$-${(}^{3}$${\mathrm{H}}_{5}$${)}_{2}$ transitions while no trilevel echoes were observed involving the $^{3}\mathrm{P}_{0}$-${(}^{3}$${\mathrm{H}}_{4}$${)}_{1}$ and $^{3}\mathrm{P}_{0}$-${(}^{3}$${\mathrm{H}}_{6}$${)}_{1}$ transitions. Photon echoes were observed on many of the satellite lines of the principal resonance $^{3}\mathrm{P}_{0}$-${(}^{3}$${\mathrm{H}}_{4}$${)}_{1}$ transitions.

Physical Review AOct 1, 19893 citations

New channels of photon echo relaxation in Y2SiO5:Pr3+ and LaF3:Pr3+ crystals

Yu. V. Malyukin

Experimental results on the investigation of low-temperature optical absorption spectra and temperature dependence of the photon echo (PE) amplitude signal in Y2SiO5:Pr3+ and LaF3:Pr3+ crystals at the transition H43(0)−3P0 of the Pr3+ ion are presented. It is shown that additional relaxation channels exist for PE in addition to the known phonon mechanisms. This is associated in a LaF3:Pr3+ crystal with the temperature variation of dipole moment at the Pr3+ ion transition. In a Y2SiO5:Pr3+ crystal, this is due to the thermally activated transitions for the Pr3+ ion between nonequivalent positions in the crystal lattice.Experimental results on the investigation of low-temperature optical absorption spectra and temperature dependence of the photon echo (PE) amplitude signal in Y2SiO5:Pr3+ and LaF3:Pr3+ crystals at the transition H43(0)−3P0 of the Pr3+ ion are presented. It is shown that additional relaxation channels exist for PE in addition to the known phonon mechanisms. This is associated in a LaF3:Pr3+ crystal with the temperature variation of dipole moment at the Pr3+ ion transition. In a Y2SiO5:Pr3+ crystal, this is due to the thermally activated transitions for the Pr3+ ion between nonequivalent positions in the crystal lattice.

Low Temperature PhysicsSep 1, 19971 citation

Multipulse photon echoes in LaF3 : Pr3+

Lynden E. Erickson

Multipulse photon echoes are observed from ${\mathrm{LaF}}_{3}$ : ${\mathrm{Pr}}^{3+}$ and are shown to be primarily stimulated echoes. The various contributions to the echoes were measured using a three-pulse photon-echo sequence that resolved the image of the echo generated by the first two pulses, and the echo generated by the second and third pulses and that of the first and third pulses from the stimulated echo. By use of a theoretical model of Shoemaker [in Laser and Coherence Spectroscopy, edited by J. I. Steinfeld (Plenum, New York, 1978)] and relaxation theory of Hu and Hartmann [Phys. Rev. B 9, 1 (1974)], the image echo contributions to the third echo is shown to be less than 10% of the total for the pulse widths and Rabi frequencies used in the measurements. As a result, multipulse photon echoes will find limited use in measuring coherence decay until very short high-intensity pulses are used to excite the echoes.Multipulse photon echoes are observed from ${\mathrm{LaF}}_{3}$:${\mathrm{Pr}}^{3+}$ and are shown to be primarily stimulated echoes. The various contributions to the echoes were measured using a three-pulse photon-echo sequence that resolved the image of the echo generated by the first two pulses, and the echo generated by the second and third pulses and that of the first and third pulses from the stimulated echo. By use of a theoretical model of Shoemaker [in Laser and Coherence Spectroscopy, edited by J. I. Steinfeld (Plenum, New York, 1978)] and relaxation theory of Hu and Hartmann [Phys. Rev. B 9, 1 (1974)], the image echo contributions to the third echo is shown to be less than 10% of the total for the pulse widths and Rabi frequencies used in the measurements. As a result, multipulse photon echoes will find limited use in measuring coherence decay until very short high-intensity pulses are used to excite the echoes.

Physical Review ANov 1, 19924 citations

Photon-echo and stimulated-photon-echo experiments in

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

{\mathrm{LaF}}_{3}

on the three transitions,

^{3}\mathrm{P}_{0}

{(}^{3}

{\mathrm{H}}_{5}

{)}_{1}

^{3}\mathrm{P}_{0}

{(}^{3}

{\mathrm{H}}_{5}

{)}_{2}

, and

^{3}\mathrm{P}_{0}

{(}^{3}

{\mathrm{H}}_{6}

{)}_{1}

[none of which, therefore, involves the

{(}^{3}

{\mathrm{H}}_{4}

{)}_{1}

ground state] at liquid-He temperatures have revealed the presence of anomalously large residual homogeneous linewidths. The subscripts (e.g., 1,2) denote the crystal-field-split levels of the

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

ion states. Amplitude-modulated trilevel echoes were observed involving the

^{3}\mathrm{P}_{0}

{(}^{3}

{\mathrm{H}}_{5}

{)}_{1}

and

^{3}\mathrm{P}_{0}

{(}^{3}

{\mathrm{H}}_{5}

{)}_{2}

transitions while no trilevel echoes were observed involving the

^{3}\mathrm{P}_{0}

{(}^{3}

{\mathrm{H}}_{4}

{)}_{1}

and

^{3}\mathrm{P}_{0}

{(}^{3}

{\mathrm{H}}_{6}

{)}_{1}

transitions. Photon echoes were observed on many of the satellite lines of the principal resonance

^{3}\mathrm{P}_{0}

{(}^{3}

{\mathrm{H}}_{4}

{)}_{1}

transitions.

Multipulse photon echoes are observed from

{\mathrm{LaF}}_{3}

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

and are shown to be primarily stimulated echoes. The various contributions to the echoes were measured using a three-pulse photon-echo sequence that resolved the image of the echo generated by the first two pulses, and the echo generated by the second and third pulses and that of the first and third pulses from the stimulated echo. By use of a theoretical model of Shoemaker [in Laser and Coherence Spectroscopy, edited by J. I. Steinfeld (Plenum, New York, 1978)] and relaxation theory of Hu and Hartmann [Phys. Rev. B 9, 1 (1974)], the image echo contributions to the third echo is shown to be less than 10% of the total for the pulse widths and Rabi frequencies used in the measurements. As a result, multipulse photon echoes will find limited use in measuring coherence decay until very short high-intensity pulses are used to excite the echoes.