Open Access1.4—6 GHz ERBIUM DOPED FIBER LASER USING RATIONAL HARMONIC MODE-LOCKING TECHNIQUE
Author(s) -
Lin Wang,
Jianhua Yu,
Xiaohong Ma,
Erfu Yang,
Yimo Zhang,
Chen Cal-He,
Chao Huang,
Shichen Li
Publication year - 1999
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.48.876
Subject(s) - harmonic , optics , fiber laser , mode locking , amplitude , pulse (music) , laser , instability , physics , wideband , erbium doped fiber amplifier , mode (computer interface) , materials science , optical amplifier , acoustics , computer science , quantum mechanics , detector , operating system
By means of the technique of rational harmonic mode-locking(RHML), we succeeded in obtaining the optical pulses at repetition rate (fp) being integer multiples of the RF drive frequency(fm≈1.4 GHz) with detuning ratio of10-6. The generation of maximum frequency was about 6 GHz and the stable rational harmonic mode-locking occurs only at fp=2fm. According to the result of our experiments, we put forth a possible mechanism of using RHML to generate high bit-zate pulses and point out the cause of the occurrence of instability in higher PHML. Furthermore, we demonstrate an effective method to elliminate the amplitude fluctuations of output pulse train.