Paper
23 December 2013 High repetition rate passively mode-locked fiber laser with a composite cavity structure for repetition rate control
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Abstract
We have demonstrated a passively mode-locked fiber laser with a composite cavity structure for repetition rate control. An optical delay line is used to control the length so that the lengths of the main cavity and the sub-ring cavity are accurately co-prime. Using this method we have obtained 46th harmonic pulses with a fundamental repetition of 17.39MHz. The fundamental mode-locking is substantially suppressed. The SNR of rf spectrum is higher than 45 dB. Stable 800MHz repetition rate mode-locked pulses in duration of 14.27 ps are generated. The detuning phenomenon appears when two cavity’s lengths are not matched. A larger pump power is required to maintain the oscillation.
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Sha Tao, Lixin Xu, Guoliang Chen, Chun Gu, Xianming Zhang, Hongyan Song, Xiaoling Meng, and Hai Ming "High repetition rate passively mode-locked fiber laser with a composite cavity structure for repetition rate control", Proc. SPIE 9043, 2013 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing, 904308 (23 December 2013); https://doi.org/10.1117/12.2034155
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KEYWORDS
Mode locking

Composites

Fiber lasers

Modulation

Picosecond phenomena

Signal to noise ratio

Frequency combs

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