Abstract

We report on the development of a compact continuous-wave frequency-quintupled laser at 308 nm, which is based on a fiber laser operating in the telecom band. Three consecutive frequency conversion stages in nonlinear crystals are employed to achieve a $2\nu + 3\nu = 5\nu$ frequency mixing. The performance of the laser system is demonstrated by linear absorption spectroscopy of a narrow intercombination line in zinc.

© 2021 Optical Society of America

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