Laser Oscillations at 0.918, 1.057, and 1.401 Microns in Nd3+-Doped Borate Glasses

Abstract

Borate glasses doped with Nd³⁺ have been prepared in small (70 g) batches, and rods of sufficiently high optical quality for laser oscillations have been pulled directly from the melts. Laser action occurs in three groups of wavelengths, the strongest emission being at 0.918, 1.057, and 1.401 μ. Plots of the threshold for oscillation at 1.057 μ are given as a function of both Nd₂O₃ concentration and base glass composition.