[25a-D215-1~6] 3.5 Laser system and materials

[25a-D215-1] [The 51st Young Scientist Presentation Award Speech] Ultrashort pulse generation from mode-locked Tm-doped sesquioxide lasers

〇Anna Suzuki^1,2, Christian Kraenkel³, Masaki Tokurakawa^1,2 (1.ILS, UEC, 2.CNBE, UEC, 3.IKZ)

Keywords:Kerr-lens mode-locking, Tm laser, Mid-infrared

We have developed a Kerr-lens mode-locked Tm-doped sesquioxide lasers toward sub-100 fs pulse generation at 2 μm wavelength range. Using a Tm:Sc₂O₃ single crystal and a Tm:Lu₂O₃ ceramic, pulses as short as 72 fs and 61 fs were obtained, respectively. Furthermore, using a combined gain media composed with both materials, we have successfully achieved the shortest pulse duration of 41 fs.