Open AccessGain Dependent Optimum Pulse Generation Rates of a Hybrid‐Type Actively and Passively Mode‐Locked Fiber Laser
Author(s) -
Kim Kyong Hon,
Jeon MinYong,
Park Seo Yeon,
Lee Hak Kyu,
Lee ElHang
Publication year - 1996
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.96.0196.0011
Subject(s) - materials science , fiber laser , mode (computer interface) , laser , pulse (music) , optoelectronics , fiber , optics , computer science , physics , composite material , wavelength , detector , operating system
We have experimentally observed and theoretically analyzed the gain dependent optimum repetition rates of a hybrid‐type active and passive mode locked laser pulses in an erbium‐doped fiber laser of the figure‐of‐eight geometry by utilizing a nonlinear amplifier loop mirror (NALM) as a saturable absorber and a directional‐coupler type electro‐optic modulator as an active mode locker. Transform‐limited mode‐locked pulses of about 10 ps width were obtained at repetition rates which correspond to harmonics of the cavity fundamental frequency and depend on the optical amplifier gain in the NALM.