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Femtosecond pulse operation of a Tm,Ho-codoped crystalline laser near 2 μm

Lagatsky, A.A. and Fusari, F. and Calvez, S. and Kurilchik, S.V. and Kisel, V.E. and Kuleshov, N.V. and Dawson, M.D. and Brown, C.T.A. and Sibbett, W. (2009) Femtosecond pulse operation of a Tm,Ho-codoped crystalline laser near 2 μm. Optics Letters, 35 (2). pp. 172-174. ISSN 0146-9592

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Abstract

We demonstrate, for the first time to our knowledge, femtosecond-regime mode locking of a Tm,Ho-codoped crystalline laser operating in the 2 m spectral region. Transform-limited 570 fs pulses were generated at 2055 nm by a Tm,Ho:KYWO42 laser that produced an average output power of 130 mW at a pulse repetition frequency of 118 MHz. Mode locking was achieved using an ion-implanted InGaAsSb quantum-wellbased semiconductor saturable absorber mirror.