Kim JW, Sall E, Lee B, Jeong B, Park S, Kim C, Heo D, Yashin VE, Yang J, Kim GH. 8 W 240 fs diode-pumped Yb:Y
2O
3 ceramic thin-rod femtosecond amplifier.
OPTICS EXPRESS 2019;
27:31418-31424. [PMID:
31684376 DOI:
10.1364/oe.27.031418]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 09/28/2019] [Indexed: 06/10/2023]
Abstract
A diode-pumped Yb:Y2O3 ceramic thin-rod amplifier which operates in the femtosecond regime is studied here. In a single-stage and direct four-pass amplification scheme, the amplifier delivers maximum output power of 8.1 W at a center wavelength of 1030.5 nm and spectral bandwidth of 4.8 nm. Assume a sech2-shaped pulse, a pulse duration of 239 fs is measured, exhibiting a time-bandwidth product value of 0.324. To the best of our knowledge, our Yb:Y2O3 ceramic thin-rod femtosecond amplifier exhibits the shortest pulse duration with Watt-level output power among all Yb:Y2O3-based femtosecond amplifiers.
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