High-energy kHz Yb:KYW dual-crystal regenerative amplifier

• DOI: 10.1364/oe.22.024752
• Publication Date: 2014-10-02T16:21:18Z
• Authors: Anne-Laure Calendron; Hüseyin Çankaya; Franz X. Kärtner
• Keywords: Regenerative amplification; Crystal (programming language); Fiber Bragg Grating; Fiber amplifier

A highly stable Yb:KYW based dual crystal regenerative amplifier is demonstrated, which generates at 1 kHz 6.5-mJ pulses before and up to 4.7-mJ sub-ps after compression with multilayer-dielectric gratings, respectively. The stretcher compact on chirped-fiber Bragg gratings. In continuous-wave operation, 20 W are extracted a slope efficiency of 40%. experimental data in agreement detailed simulations the laser dynamics.