  Integrated thin-film lithium niobate (TFLN) photonics has emerged as a
promising platform for realization of high-performance chip-scale optical
systems. Of particular importance are TFLN electro-optic modulators featuring
high-linearity, low driving voltage and lowpropagation loss. However, fully
integrated system requires integration of high power, low noise, and narrow
linewidth lasers on TFLN chip. Here we achieve this goal, and demonstrate
integrated high-power lasers on TFLN platform with up to 60 mW of optical power
in the waveguides. We use this platform to realize a highpower transmitter
consisting an electrically-pumped laser integrated with a 50 GHz modulator.
