Selective generation of individual Raman Stokes lines using dissipative soliton resonance pulses

Pumped by rectangular-shaped dissipative soliton resonance (DSR) pulses at 1030 nm, selective excitations of Raman Stokes lines of up to third order with extinction ratios of 8 dB and fifth order with extinction ratios of 4 dB are demonstrated experimentally. The rectangular DSR pulses are generated...

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Bibliographic Details
Published in:High power laser science and engineering 2019, Vol.7, Article e43
Main Authors: Xu, He, Chen, Sheng-Ping, Jiang, Zong-Fu
Format: Article
Language:English
Subjects:
Bandpass filters
Diodes
Energy
Excitation
Extinction
Lasers
Pulse propagation
Solitary waves
Ytterbium
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Summary:Pumped by rectangular-shaped dissipative soliton resonance (DSR) pulses at 1030 nm, selective excitations of Raman Stokes lines of up to third order with extinction ratios of 8 dB and fifth order with extinction ratios of 4 dB are demonstrated experimentally. The rectangular DSR pulses are generated from a dual-amplifier ytterbium-doped figure-of-eight mode-locked laser constructed using all $10~\unicode[STIX]{x03BC}\text{m}$ -core-diameter large-mode-area fibers. By varying the two pump powers, the peak power of the output DSR pulses can be continuously tuned from 10 W to 100 W and from 30 W to 200 W, respectively, for two different lengths of the nonlinear amplifying loop mirror inside the cavity. High-frequency components are found to correspond to parts of the pulse in the trailing edge when two bandpass filters are used to separate the propagated pulse. Consequently, it provides an all-fiber technique to achieve selective excitation of the Raman shift by adjusting the peak power of the DSR pulse.
ISSN:2095-4719
2052-3289
DOI:10.1017/hpl.2019.33