Abstract
In this work, we experimentally demonstrate continuous wave laser generation in the 330–380 nm range by intracavity self-frequency-sum-mixing processes in a Nd3+:YAl3(BO3)4 crystal. Ultraviolet laser radiation has been obtained from a simple hemispherical linear cavity by nonlinear interaction between the pump radiation from an argon laser and the infrared laser radiations at 1.06 or 1.33 μm of Nd3+ ions. In nonoptimal preliminary experiments, up to 0.2 mW of ultraviolet laser power has been obtained at 250 mW of absorbed pump power.
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