[9p-N203-1~9] 4.3 Laser sources and Laser applications

2:30 PM - 2:45 PM JST(5:30 AM - 5:45 AM UTC)English Presentation

[9p-N203-2] Investigation of Radiation Tolerance of Mode-Locked Lasers with Radiation-Hardened Erbium Doped Fibers

〇Nozomu Takagi¹, Yuichi Takeuchi¹, So Aiba¹, Ren Kondo¹, Yushi Tanaka¹, Mitsuru Musha¹ (1.ILS/UEC)

Keywords:

optical frequency comb,8-shaped NALM mode-locked laser,radiation-hardened fiber

We have now developped spaceborne precision microwave reference generater in which the frequency of iodine-stabilized laser at 1.5 um is downconverted into microwave region by using optical frequency comb. For optical frequency comb, erbium doped figure-8 NALM fiber mode-locked laser is developed which has low phase noise, self-starting, and long-term operation. In this conference, we will present radiation-hardened mode-locked fiber laser which consist of specially-custumed high doped radiation-hardened fiber and would keep mode-lock operation against more than 150 krad total dose exposure.