Experimental studies of self-starting passive mode locking Er3+ -doped fiber ring soliton laser |
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Authors: | Dongfeng Liu Guofu Chen Xianhua Wang |
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Institution: | (1) State Key Laboratory of Transient Optics Technology, Xi’ an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, 710068 Xi' an, China |
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Abstract: | The mechanism of femtosecond optical pulse generation in a self-starting Er3+-doped fiber ring soliton laser and experimental research results are discussed. Using the nonlinear polarization rotation
effect of the fiber for sat-urable absorbers (and then self-amplitude modulation) which acts as the mode locking mechanism
in an Er3+-doped fiber ring cavity laser, stable self-starting mode locking pulses have been generated. The shortest output pulse is
269 fs, with the central wavelength of 1,531 pm at the repetition rate of 21.37 MHz. The average output powen of the two terminators
of the laser are 0.25 mW and 0.08 mW respectively. The threshold pump power which sustains the mode locking is 15 mW. Under
high pump power, the laser works in a high order harmonic mode locking state. The mode locking pulse durations vs different
cavity lengths are also studied.
Project supported by Major Project of Chines: Academy of Sciences (No. KJ952-J1-705). |
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Keywords: | optical fiber communication ultrafast optics technology transient optics teehnology femtosecond optics laser technology mode-locking soliton rare-earth-doped fiber |
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