Abstract
Solid para- is a promising gain medium for stimulated Raman scattering, due to its high number density and narrow Raman linewidth. In preparation for the design of a cw solid hydrogen Raman laser, we have made the first measurements, to our knowledge, of the index of refraction of a solid para- crystal, in the wavelength range of . For a crystal stabilized at , this refractive index is measured to be at . A slight, but significant, dependence on the final crystal-growth temperature is observed, with higher at higher crystal-growth temperatures. Once a crystal is grown, it can be heated up to with no change in . The refractive index varies only slightly over the observed wavelength range, and no significant birefringence was observed.
© 2011 Optical Society of America
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