[CTuA1A] MIR Lasers

[CTuA1A-03] Highly-efficient CW Fe:ZnSe Laser Amplifier at ~4 μm

*Enhao Li¹, Hiyori Uehara^1,2, Shigeki Tokita³, Fedor Potemkin⁴, Ryo Yasuhara^1,2 (1. SOKENDAI (Japan), 2. NIFS (Japan), 3. Osaka Univ. (Japan), 4. Moscow State Univ. (Russia))

[Presentation Style] Onsite

We present a high-efficiency CW Fe:ZnSe laser amplifier seeded by a 4-μm quantum cascade laser. The amplifier obtained a more than fourfold single-pass gain and a maximum extraction efficiency of over 30%.