[14p-P6-1~14] 3.5 レーザー装置・材料

[14p-P6-2] ツリウムドープファイバ中のポンプ光の強度変調による信号光の変調強度の検討

〇王 宇¹、セット ジイヨン¹、山下 真司¹ (1.東京大学)

キーワード：モード同期、ファイバレーザ

Recently, we proposed and demonstrated a mode-locked Tm-doped fiber (TDF) laser using a technique termed “active mode-locking via pump modulation” (AMPM).The cavity gain is modulated via pump modulation, of which the modulation frequency is matched with the free spectral range of the cavity. In order to take pump modulation into account, the rate equations should be solved with the population-inversion density is modulated with sinusoidal pump power so that the lifetime of upper state can be included. Here, we investigate a pump-to-signal modulation transfer function in a TDF numerically and experimentally for understanding the mechanism of the AMPM method.