Polarization rotation of photon echo at J = 0 ↔ 1 transition in magnetic field

✍ Scribed by V.N. Ishchenko; S.A. Kochubei; E.B. Khvorostov; N.N. Rubtsova; I.V. Yevseyev

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 467 KB
• Volume: 1
• Category: Article
• ISSN: 1612-2011
• DOI: 10.1002/lapl.200310008

✦ Synopsis

Detailed experimental analysis of photon echo
polarization in a longitudinal magnetic field is performed for the
first time at the simplest quantum transition J = 1 ↔
J = 0 for which the non-Faraday rotation of photon echo
polarization plane was predicted. The echo was generated at the
intercombination transition (6s6p) ^3^P~1~ →
(6s^2^) ^1^S~0~ of ^174^Yb by two resonant laser pulses of
linear (parallel or mutually orthogonal) polarization, and the
angled echo optical scheme was applied for the detection. At the
magnetic field strength ℬ ⩽ 5 G the photon echo has
polarization very close to linear one; its polarization plane
rotates around magnetic field vector, and photon echo polarization
components and integral echo power oscillate versus ℬ
from its maximum value to zero, in agreement with theory. At a
stronger magnetic field ℬ ∼ 40 G photon echo power
oscillations disappear, no preferable orientation of polarization
vector is observed; the fluctuations of exciting radiation
spectrum are supposed to be responsible for this "non-polarized"
echo.