We report a 2 μm ultrafast solid-state Tm: Lu2O3 laser, mode-locked by single-layer graphene, generating transform-limited ∼ 410 fs pulses, with a spectral width ∼ 11.1 nm at 2067 nm. The maximum average output power is 270 mW, at a pulse repetition frequency of 110 MHz. This is a convenient high-power transform-limited ultrafast laser at 2 μm for various applications, such as laser surgery and material processing.
Bibliographical noteFunding Information:
We acknowledge funding from the ERC grant NANOPOTS, EU grants RODIN, MEM4WIN, GENIUS, EPSRC grants EP/GO30480/1 and EP/G042357/1, King's College Cambridge, the Royal Academy of Engineering, a Royal Society Wolfson Research Merit Award, and the Cambridge Nokia Research Centre.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)