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.
© 2007 Optical Society of America
Original Manuscript: May 24, 2007
Manuscript Accepted: July 1, 2007
Published: August 16, 2007
Carsten Langrock, M. M. Fejer, I. Hartl, and Martin E. Fermann, "Generation of octave-spanning spectra inside reverse-proton-exchanged periodically poled lithium niobate waveguides," Opt. Lett. 32, 2478-2480 (2007)