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, Sha Tao, Lixin Xu, Lixin Xu, Guoliang Chen, Guoliang Chen, Chun Gu, Chun Gu, Xianming Zhang, Xianming Zhang, Hongyan Song, Hongyan Song, Xiaoling Meng, Xiaoling Meng, Hai Ming, 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); doi: 10.1117/12.2034155; https://doi.org/10.1117/12.2034155
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