[8p-A31-1~12] 3.4 Laser system and materials

2:15 PM - 2:30 PM JST(5:15 AM - 5:30 AM UTC)

[8p-A31-2] High peak power femtosecond pulse generation at a 3 MHz Er-fiber laser using a 3×3 coupler

〇Rion Kasatani¹, Hiroyuki Toda¹, Suzuki Masayuki¹ (1.Doshisha Univ.)

Keywords:

Er-fiber laser,Nonlinear Amplifying Loop Mirror

In this study, we developed an Er-fiber laser operating at a repetition rate of several megahertz for applications such as multiphoton microscopy. The repetition rate of an Er-fiber laser oscillator using a 3×3 coupler was reduced, followed by power amplification using an EDFA and pulse compression. As a result, stable mode-locked operation was achieved at a repetition rate of 3.2 MHz, and high-peak-power femtosecond pulses with a minimum pulse duration of 95 fs and a peak power of 198 kW were obtained.