We report an observation of radio-frequency (RF)-induced transparency in an optically dense medium of Pr<sup>3+</sup>-doped Y<sub>2</sub>SiO<sub>5</sub>. We observed that the optical probe field had a gain when the RF pulse area was 2π. We also calculated the RF Rabi frequency in the medium by measuring the period of RF-induced transparency.
© 1998 Optical Society of America
B. S. Ham, M. S. Shahriar, and P. R. Hemmer, "Radio-frequency-induced optical gain in Pr3+:Y2SiO5," J. Opt. Soc. Am. B 15, 1541-1544 (1998)