17.8 fs broadband Kerr-lens mode-locked Yb:CALGO oscillator.
Opt Lett
; 46(8): 1892-1895, 2021 Apr 15.
Article
en En
| MEDLINE
| ID: mdl-33857097
ABSTRACT
Pulses as short as 17.8 fs with a spectral bandwidth of 145 nm and central wavelength of 1118 nm have been generated from a Kerr-lens mode-locked YbCALGO oscillator. The oscillator operating at an average power of 26 mW and a repetition rate of 95.9 MHz is pumped by a cost-effective single-mode fiber coupled laser diode emitting 800 mW at 976 nm. The dispersion is compensated using a prism pair combined with broadband chirp mirrors. To the best of our knowledge, the pulse durations corresponding to approximately 4.8 optical cycle pulses are the shortest achieved durations through a Yb-doped bulk oscillator.
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Opt Lett
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2021
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Article