An Evaluation of Nonlinear Optical Materials by the Second-Harmonic Powder Technique

The nonlinear optical properties of 21 crystalline materials, principally of the iodate family of compounds, were evaluated using the second-harmonic powder technique developed by Kurtz and Perry. By this method the secondharmonic radiation generated in a powdered sample by a laser at 1.06 Mm was compared with a known reference, LlIOj in this case. Of the materials tested, 12 have previously been reported on in the literature, and our results are in substantial agreement. KIOj and RbI03 are identified as having the most promise for crystal development effort. The remaining materials, observed for the first time, failed to exhibit appreciable second-harmonic intensity. PROBLEM STATUS This is a final report on one phase of the NRL Problem, AUTHORIZATION NRL Problem NO 1-22.501 Project ARPA Order 306, Amendment 15 Manuscript submitted March 10, 1971.