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Broadly tunable femtosecond mode-locking in a Tm:KYW laser near 2µm

Lagatsky, A.A. and Calvez, Stephane and Gupta, J.A. and Brown, C. T. A. and Dawson, Martin and Sibbett, W. (2011) Broadly tunable femtosecond mode-locking in a Tm:KYW laser near 2µm. Optics Express, 19 (10). pp. 9995-10000. ISSN 1094-4087

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Abstract

Efficient mode-locking in a Tm:KY(WO4)2 laser is demonstrated by using InGaAsSb quantum-well SESAMs. Self-starting ultrashort pulse generation was realized in the 1979-2074 nm spectral region. Maximum average output power up to 411 mW was produced around 1986 nm with the corresponding pulse duration and repetition rate of 549 fs and 105 MHz respectively. Optimised pulse durations of 386 fs were produced with an average power of 235 mW at 2029 nm.