We demonstrate simultaneous octave-level spectral broadening and carrier-envelope-offset sensing of mode- locked Er- and Yb-doped femtosecond fiber lasers using constant-period and chirped reverse-proton- exchanged periodically poled lithium niobate waveguides. Chirped quasi-phase-matching gratings greatly improve spectral broadening of Yb-fiber lasers.
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Langrock OL2007c | 1.75 MB |