Reduction of timing jitter and intensity noise in normal-dispersion passively mode-locked fiber lasers by narrow band-pass filtering

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Fiber lasers mode-locked with normal cavity dispersion have recently attracted great attention due to large output pulse energy and femtosecond pulse duration. Here we accurately characterized the timing jitter of normal-dispersion fiber lasers using a balanced cross-correlation method. The timing jitter characterization experiments show that the timing jitter of normal-dispersion mode-locked fiber lasers can be significantly reduced by using narrow band-pass filtering (e.g., 7-nm bandwidth filtering in this work). We further identify that the timing jitter of the fiber laser is confined in a limited range, which is almost independent of cavity dispersion map due to the amplifier-similariton formation by insertion of the narrow bandpass filter. The lowest observed timing jitter reaches 0.57 fs (rms) integrated from 10 kHz to 10 MHz Fourier frequency. The rms relative intensity noise (RIN) is also reduced from 0.37% to 0.02% (integrated from 1 kHz to 5 MHz Fourier frequency) by the insertion of narrow band-pass filter.
Publisher
OPTICAL SOC AMER
Issue Date
2014-11
Language
English
Article Type
Article
Keywords

PULSE GENERATION; SYNCHRONIZATION; OSCILLATOR; COMB

Citation

OPTICS EXPRESS, v.22, no.23, pp.28276 - 28283

ISSN
1094-4087
DOI
10.1364/OE.22.028276
URI
http://hdl.handle.net/10203/195093
Appears in Collection
ME-Journal Papers(저널논문)
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