crystal-growth-10-1.jpgII-VI Optical Systems grows and produces multiple types of colquiriites and trigonal crystals, with a=b=c, a=b≠90°. Crystals in the trigonal structure can be referred to a hexagonal lattice, with a=b≠c, a=b=90°, g=120°.

These lattice constants are given for the hexagonal lattice. The colquiriites have a single axis, i.e., they are uniaxial crystals, with the optical axis along the c, [001] direction. Our standard Cr:LiSAF and Cr:LiCAF crystals are typically grown along the [100] direction and Cr: LiSGaF crystals are grown along the [110] direction.

While these growth directions differ crystallographically, they are both perpendicular to the optical axis. The p - transition (E||c) and the s -transition (E^c) both have approximately the same peak emission wavelength, however, the p - transition typically exhibits a cross section 2.5 times larger than the cross section for the s - transition. 

Cr:LiSAF, LiSGaF & LiCAF - chart

The laser material being supplied was produced and sold under a license agreement granting such rights between the Regents of the University of California and II-VI Optical Systems incorporated. The laser material is covered by claims of U.S. patent no. 4,811,349, issued to the regents of the University of California. Use of this material for purposes other than research or evaluation in a laser infringes the patent rights of the Regents. The Regents will be advised of the sale and/or delivery of the covered laser material to you. It is your responsibility to seek a commercial license from the Regents if you intend to infringe the Regents patent rights.