10.4 kW coherently combined ultrafast fiber laser

Abstract

An ultrafast laser delivering 10.4 kW average output power based on coherent combination of twelve stepindex fiber amplifiers is presented. The system emits close-to-transform-limited 254 fs pulses at 80 MHz repetition rate, has a high beam quality (M2<=1.2), and a low relative intensity noise of 0.56% in the frequency range of from 1 Hz to 1 MHz. Automated spatiotemporal alignment allows for hands-off operation.

References in corpus (2)

• 1kW 1mJ 8-channel ultrafast fiber laser
• 3.5 kW coherently combined ultrafast fiber laser

Cited by in corpus (5)

• 1 kW, 10 mJ, 120 fs coherently combined fiber CPA laser system
• Kilowatt-average-power compression of millijoule pulses in a gas-filled multi-pass cell
• Impact of thermo-optical effects in coherently-combined multicore fiber amplifiers
• Coherent beam combining with micro-lens arrays
• Dynamic focus shaping with mixed-aperture coherent beam combining