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Low-threshold, multi-gigahertz repetition-rate femtosecond Ti : sapphire laser

Stormont, B. and Cormack, I.G. and Mazilu, M. and Brown, C.T.A. and Burns, D. and Sibbett, W. (2003) Low-threshold, multi-gigahertz repetition-rate femtosecond Ti : sapphire laser. Electronics Letters, 39 (25). pp. 1820-1822. ISSN 0013-5194

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A repetition rate of 2.3 GHz is achieved in a femtosecond Ti:sapphire laser. Pulses of 240 fs duration centred on 840 nm are produced from a simple 4-mirror laser cavity that incorporates a saturable Bragg reflector and operates at pump powers as low as 400 mW.