7 April 2015 1484-nm two-cascaded Raman fiber laser mode-locked by an intermode-beating mode-locking technique
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Abstract
We demonstrate a 1484-nm two-cascaded Raman mode-locked fiber laser based on the intermode-beating mode-locking (IBML) technique. Through the two-cascaded Raman shifts of P2O5 in a phosphosilicate fiber, the continuous-wave (CW) 1064-nm Raman pump can be transferred to the 1484-nm second-order Stokes. When the intermode-beating frequency of the 1064-nm pump source matches with the 1484-nm Raman-cavity frequency, the IBML condition is satisfied, and the harmonic mode-locking at 1484-nm occurs to stably emit nanosecond pulse trains. By properly adjusting the 1484 nm Raman-cavity length, we have further realized the tuning of the mode-locking harmonic order. The 472nd- and 757th-order harmonic mode-locking operations with repetition rates of 72.728 and 116.292 MHz have been obtained, respectively. The IBML operation is stable with a radio-frequency (RF) supermode suppression ratio of 33.9 dB and RF signal-to-noise ratio of 51.8 dB.
© 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)
Fengfu Xiong, Fengfu Xiong, Yizhong Huang, Yizhong Huang, Lili Le, Lili Le, Bin Xu, Bin Xu, Nan Chen, Nan Chen, Zhiping Cai, Zhiping Cai, Zhengqian Luo, Zhengqian Luo, } "1484-nm two-cascaded Raman fiber laser mode-locked by an intermode-beating mode-locking technique," Optical Engineering 54(4), 046102 (7 April 2015). https://doi.org/10.1117/1.OE.54.4.046102 . Submission:
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