Generation of octave-spanning spectra inside reverse-photon-exchanged periodically poled lithium niobate waveguides.
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.
Langrock
Carsten
C
Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305-4085, USA. langrock@stanford.edu
Fejer
M M
MM
Hartl
I
I
Fermann
Martin E
ME