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.
© 2005 Optical Society of America
Michael V. Pack, Darrell J. Armstrong, Arlee V. Smith, Gerard Aka, Bernard Ferrand, and Denis Pelenc, "Measurement of the chi(2) tensor of GdCa4O(BO3)3 and YCa4O(BO3)3 crystals," J. Opt. Soc. Am. B 22, 417-425 (2005)