Abstract
Fluoride materials display specific properties applicable for use as active and passive optical elements for advanced laser programs. Generally, these materials exhibit low values of n/sub 2/ and high ultraviolet transmission. Nd:YLF is a very promising laser fusion oscillator element operating in conjunction with phosphate and fluoroberyllate systems. New materials possessing high concentrations of terbium and cerium - KTb/sub 3/F/sub 10/, RbTb/sub 3/F/sub 10/ and potassium cerium compounds, display high magneto-optical rotatory power, high Verdet's constant, for use as Faraday rotators. Nd:YLF, operating at 1.047 ..mu..m or 1.053 ..mu..m has been identified as the most promising oscillator material for phosphate and fluoroberyllate systems. The new materials investigation included crystal growth and phase study of KTb/sub 3/F/sub 10/. KTb/sub 3/F/sub 10/ displays one of the highest figures of merit of any known material. Preliminary growth studies of other potential rotator materials included the RbF-Tb/sub 3/F/sub 10/ and the KF-CeF/sub 3/ systems. Compounds of both systems are expected to display high Verdet's constants.
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