The high-power erbium-doped fiber amplifier operates at a long wavelength of 1600nm. It delivers picosecond pulses with peak powers in the kilowatt range and an average output power of 1 watt.
These amplified pulses are subsequently frequency-doubled to generate red light at 800nm via second harmonic generation (SHG).
The visible green light seen in the image originates from upconversion luminescence within the erbium-doped fiber and represents only a minor fraction of the amplifier’s output power.

Coordinator - University of Limerick
Dr. Christophe Silien