[21p-E203-1~5] 3.5 Laser system and materials

[21p-E203-5] Pulse Train Shaping for Ultra-Violet Laser with Coherent Beam Combining

〇Kouji Tsubakimoto¹, Kou Fukuishi¹, Hidetsugu Yoshida¹, Noriaki Miyanaga^1,2 (1.ILE Osaka Univ., 2.ILT)

Keywords:pulse switching, ultra-violet laser, beam combining

We demonstrate a pulse-train switching by using a coherent polarization beam combiner with a phase difference speculation (PDS) algorithm. Based on the excellent stability of feedback control with the PDS algorithm, a stable burst-mode extraction with an arbitrary duty cycle was achieved with a contrast ratio of 800:1 for a 5-MHz ultra-violet pulse laser.