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

Japanese Journal of Applied Physics

Self-Induced Transparency in Samarium Atomic Vapor under Condition of High Temperature and High Density

Won‐Kyu Lee, Myoung Kyu Oh, Wonshik Choi, Jin Ho Jeon, Jai Hyung Lee, Joon Sung Chang

Published Aug 15, 2002• 3 citations
Publisher

Abstract

We performed the experiment of self-induced transparency in samarium atomic vapor under the condition of high temperature and high density. The sudden onset of the transmission, the maximum pulse delay and the pulse broadening were observed with π pulse. With this result we estimate the dipole moment of the transition line for 152 Sm. The peak amplification, the pulse narrowing and the pulse breakup were observed when the pulse area was above 3π. These observations are strong evidences of self-induced transparency. Our result is the observation of self-induced transparency under the highest-temperature, highest-density condition and the first observation of this phenomenon in samarium vapor to our knowledge.

DOI
10.1143/jjap.41.5170

Related papers

Self-induced transparency on degenerate magnetic dipole transitions

Gan Xu, Terence A. King, J. J. Bannister

Self-induced transparency has been observed on a $Q(2)$-degenerate transition for the first time. Coherent interaction occurs as a short pulse from the $^{2}P_{\frac{1}{2}}F=2\ensuremath{\rightarrow}^{2}P_{\frac{3}{2}}{F}^{\ensuremath{'}}=2$, magnetic dipole transition of the atomic-iodine laser passes through a self-resonant iodine vapor. High transparency and considerable pulse delay at input pulse areas $\ensuremath{\theta}>\ensuremath{\pi}$, and small-pulse splitting at $\ensuremath{\theta}\ensuremath{\simeq}\ensuremath{\pi}$ characterized the phenomena.

Physical Review A•Jun 1, 1984•3 citations

Self-Induced Transparency Phenomena of Single-Mode Pulse Laser Propagating in a Thick Ytterbium Vapor Column

Jonghoon Yi, Hyunmin Park, Yongjoo Rhee +1 more

The variations in pulse shape of a single-mode pulse laser propagating through ytterbium (Yb) atomic medium were investigated experimentally. The laser pulse shape was changed as a function of pulse area and it could be explained well using the area theorem. When the pulse area was close to 2π, the pulse shape was transformed to a hyperbolic secant function after transmission. The transmission curve of the propagating laser vs. the pulse area demonstrated self-induced transparency phenomena well. However, the transmission was markedly reduced when the atomic density was increased above ∼4×1010 atoms/cm3. Several causes; such as collision-induced polarization relaxation, Doppler broadening, laser incoherence, and power broadening, which could induce reduced transmission, were examined. It was the incoherence of the laser that caused reduced transmission because the laser line width was broader than the Fourier-transform limit, and the absorbed energy dissipated through spontaneous emission.

Japanese Journal of Applied Physics•Mar 1, 2000•3 citations

Elimination of self-focusing and self-defocusing under the condition of electromagnetically induced transparency in a lambda-type atomic samarium vapor

Myoung-Kyu Oh, Won-Kyu Lee, Jin-Ho Jeon +3 more

We observed that the spatial distortions of a probe pulse from Kerr nonlinearity were eliminated almost perfectly when a strong coupling pulse copropagates with the probe on two-photon-resonance in /spl Lambda/-type 3 levels of atomic Sm.

•Jun 21, 2004•0 citations

Coherent Pulse Propagation on a Q-branch Transition in Atomic Iodine Vapour

Gan Xu, Terence A. King, J. J. Bannister

Self-induced transparency (SIT) has been observed on a Q(J)-branch transition (J=2) for the first time. Coherent field-matter interaction was studied using a photodissociation atomic iodine laser system operating on the 2P1/2 F=2 →2P3/2 F′=2 magnetic dipole hyperfine transition and a self-resonant iodine vapour. With linearly polarized radiation the propagation phenomena are characterized by high transparency and large time delay at pulse areas θ > π and small-pulse splitting at θ ≃ π. With circularly polarized radiation, non-degenerate SIT is observed. The results can be explained by the dynamic effects of the different dipole moments involved in the process.

Optica Acta International Journal of Optics•Jan 1, 1985•5 citations

Self-Induced Transparency and Resonant Self-Focusing in Atomic Iodine Vapor

J. J. Bannister, H. J. Baker, Terence A. King +1 more

Self-induced transparency has been observed for the degenerate, $F=3\ensuremath{\rightarrow}4$, hyperfine component of the 1.315-\ensuremath{\mu}m magnetic dipole transition of atomic iodine, at high optical power levels, up to 50 MW ${\mathrm{cm}}^{\ensuremath{-}2}$. For pulse areas approaching $2\ensuremath{\pi}$, the dynamics of the strong coherent resonant self-focusing which accompanies self-induced transparency have been studied with a streak camera to provide time-dependent analysis of the spatial beam profile.

Physical Review Letters•Apr 21, 1980•27 citations

Sharp-Line Self-Induced Transparency

H. M. Gibbs, R. E. Slusher

Self-induced transparency (SIT) has been observed under the conditions of sharp-line absorption, i.e., with an inhomogeneous absorption width only one-fourth the spectral width of the pulse. A 5-nsec pulse from a $^{202}\mathrm{Hg}$ ii laser intersected perpendicularly an atomic beam of natural rubidium. The beam slits reduced the Doppler absorption width to about 30 MHz. A particular resolved ${M}_{\mathrm{I}}$ transition of $^{85}\mathrm{Rb}$ was scanned into coincidence with the laser pulse by a 75-KOe magnetic field. With peak absorption depths of 3-6, nonlinear transmission, pulse delays, pulse breakup, and peak amplification were seen and found to be in excellent agreement with sharp-line computer solutions of the Maxwell-Bloch equations. The experimental realization of the sharp-line SIT is of interest because analytical formulas for pulse evolutions are more plentiful and because sharp-line SIT might permit compression of picosecond pulses.

Physical Review A•Dec 1, 1972•62 citations
We performed the experiment of self-induced transparency in samarium atomic vapor under the condition of high temperature and high density. The sudden onset of the transmission, the maximum pulse delay and the pulse broadening were observed with π pulse. With this result we estimate the dipole moment of the transition line for 152 Sm. The peak amplification, the pulse narrowing and the pulse breakup were observed when the pulse area was above 3π. These observations are strong evidences of self-induced transparency. Our result is the observation of self-induced transparency under the highest-temperature, highest-density condition and the first observation of this phenomenon in samarium vapor to our knowledge.
Self-induced transparency has been observed on a Q(2)Q(2)Q(2)-degenerate transition for the first time. Coherent interaction occurs as a short pulse from the $^{2}P_{\frac{1}{2}}F=2\ensuremath{\rightarrow}^{2}P_{\frac{3}{2}}{F}^{\ensuremath{'}}=2$, magnetic dipole transition of the atomic-iodine laser passes through a self-resonant iodine vapor. High transparency and considerable pulse delay at input pulse areas $\ensuremath{\theta}>\ensuremath{\pi}$, and small-pulse splitting at $\ensuremath{\theta}\ensuremath{\simeq}\ensuremath{\pi}$ characterized the phenomena.
The variations in pulse shape of a single-mode pulse laser propagating through ytterbium (Yb) atomic medium were investigated experimentally. The laser pulse shape was changed as a function of pulse area and it could be explained well using the area theorem. When the pulse area was close to 2π, the pulse shape was transformed to a hyperbolic secant function after transmission. The transmission curve of the propagating laser vs. the pulse area demonstrated self-induced transparency phenomena well. However, the transmission was markedly reduced when the atomic density was increased above ∼4×1010 atoms/cm3. Several causes; such as collision-induced polarization relaxation, Doppler broadening, laser incoherence, and power broadening, which could induce reduced transmission, were examined. It was the incoherence of the laser that caused reduced transmission because the laser line width was broader than the Fourier-transform limit, and the absorbed energy dissipated through spontaneous emission.
Self-induced transparency (SIT) has been observed on a Q(J)-branch transition (J=2) for the first time. Coherent field-matter interaction was studied using a photodissociation atomic iodine laser system operating on the 2P1/2 F=2 →2P3/2 F′=2 magnetic dipole hyperfine transition and a self-resonant iodine vapour. With linearly polarized radiation the propagation phenomena are characterized by high transparency and large time delay at pulse areas θ > π and small-pulse splitting at θ ≃ π. With circularly polarized radiation, non-degenerate SIT is observed. The results can be explained by the dynamic effects of the different dipole moments involved in the process.
Self-induced transparency has been observed for the degenerate, $F=3\ensuremath{\rightarrow}4$, hyperfine component of the 1.315-\ensuremath{\mu}m magnetic dipole transition of atomic iodine, at high optical power levels, up to 50 MW ${\mathrm{cm}}^{\ensuremath{-}2}$. For pulse areas approaching $2\ensuremath{\pi}$, the dynamics of the strong coherent resonant self-focusing which accompanies self-induced transparency have been studied with a streak camera to provide time-dependent analysis of the spatial beam profile.
Self-induced transparency (SIT) has been observed under the conditions of sharp-line absorption, i.e., with an inhomogeneous absorption width only one-fourth the spectral width of the pulse. A 5-nsec pulse from a 202Hg^{202}\mathrm{Hg}202Hg ii laser intersected perpendicularly an atomic beam of natural rubidium. The beam slits reduced the Doppler absorption width to about 30 MHz. A particular resolved MI{M}_{\mathrm{I}}MI​ transition of 85Rb^{85}\mathrm{Rb}85Rb was scanned into coincidence with the laser pulse by a 75-KOe magnetic field. With peak absorption depths of 3-6, nonlinear transmission, pulse delays, pulse breakup, and peak amplification were seen and found to be in excellent agreement with sharp-line computer solutions of the Maxwell-Bloch equations. The experimental realization of the sharp-line SIT is of interest because analytical formulas for pulse evolutions are more plentiful and because sharp-line SIT might permit compression of picosecond pulses.