Broadly tunable femtosecond pulses around 2.06 µm from a diode-pumped Tm 3+ -doped solid-state laser source

Stevenson, N. K. and Brown, C. T. A. and Hopkins, J. M. and Dawson, M. D. and Lagatsky, A. A. (2019) Broadly tunable femtosecond pulses around 2.06 µm from a diode-pumped Tm 3+ -doped solid-state laser source. Optics Express, 27 (8). pp. 11103-11111. ISSN 1094-4087 (https://doi.org/10.1364/OE.27.011103)

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Abstract

We report on a broadly tunable diode-pumped femtosecond Tm:LuScO 3 laser source around 2.06 µm. Tuning was obtained through the use of a steeply diving birefringent filter, maintaining sub-600 fs pulses over a tuning range of 2019–2110 nm. The minimum pulse duration of 240 fs was recorded at a central wavelength of 2080 nm with an average output power of 93 mW. Higher output coupling of 2% resulted in a narrower tuning range of 2070–2102 nm with generated pulses as short as 435 fs and an average output power of 119 mW at 2090 nm.

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