Femtosecond all-solid-state orange laser

Summary form only given. All-solid-state lasers shows advantages in compactness, stability, high output powers, and compatibility with newly developed mode locking mechanisms (like Kerr lens mode locking (KLM)). Even though the femtosecond solid state laser has already dominated the market for 10 years, there exists no femtosecond solid-state laser oscillator operating around 600-630 nm, which has already been widely applied for scientific studies during the dye-laser era. We demonstrate the first femtosecond mode-locked all-solid state laser oscillator covering the orange wavelength region of 600-630 nm. Femtosecond orange pulses with high average power was obtained directly from a laser oscillator by intracavity frequency doubling of a mode-locked Cr:forsterite laser using a BBO crystal. Intracavity frequency doubling shows advantages over external cavity frequency doubling due to simplicity and efficiency considerations that are key points of using solid-state instead of dye lasers.