Abstract
A continuous-wave dye laser having a self-pumped phase conjugator in place of its usual output mirror will slowly change its own output wavelength with time. The laser has a bandwidth of 1.5 GHz and can self-scan to either longer or shorter wavelengths over a 37-nm range. The phase conjugator uses self-pumped four-wave mixing in a BaTiO3 crystal. A ring laser that uses two-wave mixing in the same crystal is also observed to have a frequency offset of a few hertz compared with the frequency of the pumping beam. These two effects are related; both are caused by a spontaneously moving photorefractive-index grating in the BaTiO3 crystal.
© 1984 Optical Society of America
Full Article | PDF ArticleMore Like This
W. B. Whitten and J. M. Ramsey
Opt. Lett. 9(2) 44-46 (1984)
R. K. Jain and K. Stenersen
Opt. Lett. 9(12) 546-548 (1984)
J. M. Ramsey and W. B. Whitten
Opt. Lett. 10(7) 362-364 (1985)