Abstract
We produced ultraviolet radiation by frequency tripling the mode-locked emission of an external cavity laser containing a tapered GaAlAs amplifier gain element. The 429-nm second harmonic produced by a KNbO3 crystal was sum-frequency mixed with the 858-nm fundamental in a Li3BO5 crystal, generating as much as 50 μW of power at 286 nm.
© 1995 Optical Society of America
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