All-fiber chalcogenide Raman laser at 2 μm

We present an all-fiber Raman laser based on a mid-infrared compatible and highly nonlinear As
₃₈
Se
₆₂
core/As
₃₈
S
₆₂
cladding chalcogenide microwire. The laser operates at a wavelength of 2.025 μm with a low threshold peak power of 4.6 W. Pulse width can be compressed to the femtosecond scale.