Using intracavity frequency doubling of a diode laser pumped 946 nm Nd:YAG laser, 3.1 mW of blue output power at 473 nm was obtained. Angle-tuned, type-I frequency doubling in potassium niobate was employed, and both the KNbO3 and Nd:YAG crystals were used at room temperature.
An architectural approach that decreases the pair on-off time to much less than the individual device recovery time is presented. Two GaAs Fabry–Perot étalons, each having a 30 ns recovery time, were connected in series, defining a logic function with a fast turn-on time and a fast turn-off time. Either of two data pulses, spaced 40 ps apart, was extracted by appropriately delaying a pair of switching pulses spaced 40 ps apart. This approach has application to data generation, multiplexing and demultiplexing, self-routing, and bit permutation.
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