We report a steady-state Raman gain measurement of the <i>Q</i><sub>1</sub>(0) transition (<i>v</i> = 1 ← 0, <i>J</i> = 0 ← 0) in solid parahydrogen. We carry out measurements by pumping with a continuous-wave frequency-doubled YAG laser at 532 nm and observing the direct amplification of a probe-laser beam for the first Stokes transition at 683 nm. A large single-pass amplification coefficient of 2.3 ± 0.2 is obtained at a pump intensity of 46 kW/cm<sup>2</sup>, with an interaction length of 1 cm, giving a steady-state Raman gain coefficient of 18 ± 3 cm/MW.
© 2000 Optical Society of America
(190.2640) Nonlinear optics : Stimulated scattering, modulation, etc.
(190.5650) Nonlinear optics : Raman effect
(190.5890) Nonlinear optics : Scattering, stimulated
(290.3700) Scattering : Linewidth
(290.5910) Scattering : Scattering, stimulated Raman
M. Katsuragawa and K. Hakuta, "Raman gain measurement in solid parahydrogen," Opt. Lett. 25, 177-179 (2000)