7 April 2004 Femtosecond Yb:KYW laser pumped by a single narrow-stripe laser diode
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We demonstrate a highly efficient and low threshold passively mode-locked femtosecond Yb:KYW laser pumped by an InGaAs narrow-stripe laser diode and which incorporates a semiconductor saturable absorber mirror. Near-transform limited pulses of 123fs at 1047nm were produced at an average mode-locked power of 107mW for only 308mW of incident pump power. An optical-to-optical conversion efficiency of 35% was achieved and the corresponding electrical-to-optical efficiency exceeded 14%.
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Alexander A. Lagatsky, Edward U. Rafailov, Christopher G. Leburn, Christian T.A. Brown, Ning Xiang, Oleg G. Okhotnikov, Wilson Sibbett, "Femtosecond Yb:KYW laser pumped by a single narrow-stripe laser diode", Proc. SPIE 5478, Laser Optics 2003: Solid State Lasers and Nonlinear Frequency Conversion, (7 April 2004); doi: 10.1117/12.558357; https://doi.org/10.1117/12.558357

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