Stokes light induced modulation instability in high power continuous wave fiber amplifiers

Yan, Mingjian; Zheng, Yunhan; Liang, Huisheng; Li, Fangxin; Han, Zheng‐Fu; Zhu, Rihong

doi:10.1364/oe.419091

Cited by 10 publications

(6 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on the 130 mm coiling diameter of the amplifier YDF, the suppression of SRS is 24 dB relative to the intensity of the signal light in the 1090 nm laser, as shown in figure 5(a). When the coiling diameter of the amplifier YDF increased to 140 mm, a 34 dB suppression of SRS was obtained, achieving further suppression of SRS by the mode combination (11,01 → 11,01)dominated IMFWM; this was also be demonstrated in our previous work [30]. Figure 9 shows the output spectra of the 1080 nm fiber amplifier with a minimum coiling diameter of 150 mm.…”

Section: Discussionsupporting

confidence: 71%

Interaction between inter-modal four-wave mixing and stimulated Raman scattering in high-power fiber lasers

Li¹,

Han²,

Chen³

et al. 2023

Laser Phys. Lett.

Self Cite

View full text Add to dashboard Cite

A theoretical model of the interaction between inter-modal four-wave mixing (IMFWM) and stimulated Raman scattering (SRS) in continuous high-power fiber lasers is proposed. The investigation shows that the combined gain of IMFWM and SRS is affected by mode combinations and fiber parameters. The dynamic evolution of the enhanced IMFWM suppressing the SRS is observed in the output spectra, accompanied by the intensity asymmetry of the IMFWM-induced Stokes and anti-Stokes lights. Furthermore, the substantial suppression of the combined gain was realized by increasing the coiling diameter of the gain fiber from 130 mm to 150 mm under mode combination (21,01 → 21,01)-dominated IMFWM.

show abstract

Section: Discussionsupporting

confidence: 71%

Interaction between inter-modal four-wave mixing and stimulated Raman scattering in high-power fiber lasers

Li¹,

Han²,

Chen³

et al. 2023

Laser Phys. Lett.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Firstly, the characteristic peaks of 1 st Raman effect have been observed when the output power reached 283 W. Then, two sidelobes around the signal wavelength appeared at 1067.9 nm and 1081.4 nm as the power scaled to 366 W, which manifested the appearance of SRSinduced XPM-MI [2]. The calculated gain spectra [2,19] of SRS-induced XPM-MI effect is plotted in Fig. 3(b).…”

Section: Resultsmentioning

confidence: 96%

SRS-Induced Spatial-Spectral Distortion and Its Mitigation Strategy in High-Power Fiber Amplifiers

Zhang

Xie

et al. 2022

IEEE Photonics J.

View full text Add to dashboard Cite

The spatial-spectral evolution properties of laser beam in the presence of stimulated Raman scattering (SRS) effect have been studied in large mode area (LMA) fiber. With the employment of long/short pass filters, spatial evolution of the signal and Raman light has been studied individually. After the onset of SRS, the simultaneous optimizing of signal light and degrading of Raman light was observed, which has been attributed to the SRS effect of multimode laser beams in LMA fiber. The spectral evolution characteristics indicated that the SRS effect in LMA fiber will trigger other nonlinear effects, mainly inter-modal four-wave-mixing effect and cross-phase-modulation induced modulation instability. Furthermore, the impacts of bending strategy and multimode LMA fiber on SRS-induced spatialspectral distortion have also been studied, which shows that the SRS-induced mode distortion can be suppressed by increasing the fiber size while the bending strategy plays a limited role.

show abstract

“…The Brillouin scattering threshold can be effectively increased by broadening the spectral line at a single frequency and then amplifying so to suppress the SBS effect. The spectrum of the noise modulated laser is relatively continuous, which has advantages in suppressing nonlinear modulation effects such as self-phase modulation and cross-phase modulation [9].…”

Section: Introductionmentioning

confidence: 99%

High power narrow linewidth fiber laser based on superfluorescent white noise modulation

Shan,

Hou,

et al. 2024

Laser Phys.

View full text Add to dashboard Cite

High power narrow linewidth fiber lasers have important applications in the fields of national defense, military and industrial intelligent manufacturing. At present, the power enhancement of narrow linewidth lasers is limited by the nonlinear and thermal effects of fiber, among which the stimulated Brillouin scattering (SBS) effect is highly destructive due to its low threshold. The SBS effect is easily produced using a single frequency laser as the seed of a high power narrow linewidth laser directly. The Brillouin scattering threshold can be effectively increased by broadening the spectrum line at a single frequency. A spectral broadening technique for single frequency lasers based on superfluorescent white noise modulation was proposed. The broadband characteristics of the amplified spontaneous emission light source to generate noise voltage on the photodetector was employed, and the lithium niobate electro-optical modulator was driven to perform broadband phase modulation in a single frequency laser. The phase modulation broadening of the single frequency laser was carried out using superfluorescent white noise. Different linewidth broadening effects of single frequency lasers were realized by changing the amplitude of the white noise. An experimental platform of the four-stage main oscillation power amplification structure was built, and a high power narrow linewidth laser with output power of 2 kW and spectral linewidth of 0.15 nm (10 dB) was realized, which effectively inhibited the SBS effect of the laser.

show abstract

Stokes light induced modulation instability in high power continuous wave fiber amplifiers

Cited by 10 publications

References 40 publications

Interaction between inter-modal four-wave mixing and stimulated Raman scattering in high-power fiber lasers

Interaction between inter-modal four-wave mixing and stimulated Raman scattering in high-power fiber lasers

SRS-Induced Spatial-Spectral Distortion and Its Mitigation Strategy in High-Power Fiber Amplifiers

High power narrow linewidth fiber laser based on superfluorescent white noise modulation

Contact Info

Product

Resources

About