Measurement of the chi((2)) tensor of GdCa4O(BO3)(3) and YCa4O(BO3)(3) crystals

摘要

Using the separated-beam method, we have measured the full second-order nonlinear optical tensors of the crystals GdCa4O(BO3)(3) and YCa4O(BO3)(3). Our d tensors (d = chi((2))/2) differ from those of previous reports but give nearly the same values of d(eff) for type-I doubling of 1064-nm light. However, for other wavelengths or for type-II doubling, our tensors give values for d(eff) distinctly different from the alternative tensors. (C) 2005 Optical Society of America.