Self-balanced Q- and gain-switched erbium all-fiber laser
Tzong-Yow Tsai,
Hao-Hsiang Ma,
Yen-Cheng Fang,
Hong-Xi Tsao,
Shih-Ting Lin
Affiliations
Tzong-Yow Tsai
Lasers and Photonics Laboratory, Institute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University, No. 1 University Rd., Tainan City, 70101, Taiwan
Hao-Hsiang Ma
Lasers and Photonics Laboratory, Institute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University, No. 1 University Rd., Tainan City, 70101, Taiwan
Yen-Cheng Fang
Lasers and Photonics Laboratory, Institute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University, No. 1 University Rd., Tainan City, 70101, Taiwan
Hong-Xi Tsao
Industrial Technology Research Institute, Tainan County, 734, Taiwan
Shih-Ting Lin
Industrial Technology Research Institute, Tainan County, 734, Taiwan
We demonstrate a 980-nm CW-pumped fully passive pulsed all-Er3+ all-fiber laser, self-balancing between being Q- and gain-switched at S and L bands. The laser was passively Q-switched at 1510 nm with the saturable absorber in an intra-cavity gain-switched at 1570 nm. The time spacing between the Q- and gain-switched pulse peaks was steadily 0.92 or 2.75 μs depending on the absorber lengths. Sequential 1510-nm pulsing with a pulse energy of 3.8 μJ and a pulse width of 280 ns at a repetition rate of 1.7 kHz was achieved with a pump power of 175 mW.
