Infrared and Laser Engineering, Volume. 52, Issue 1, 20220332(2023)
Phase noise of pumping in single-frequency fiber amplifier
Figures & Tables(13)
Fig. 2. Phase noise of different pump powers under 5 m fiber and 915 nm pump. (a) Phase noise influenced by pump noise; (b) Phase noise combined with pump noise and background
Fig. 3. Phase noise of different pump wavelengths pumped by 5 m fiber and 484 mW. (a) Phase noise influenced by pump noise; (b) Phase noise combined with pump noise and background
Fig. 4. Phase noise of 484 mW, 915 nm pump with different gain fiber lengths. (a) Phase noise influenced by pump noise; (b) Phase noise combined with pump noise and background
Fig. 5. Phase noise measurement of Er3+/Yb3+ co-doped fiber amplifiers
Fig. 6. Output current is 1.1 A, and the phase noise of different power supplies. (a) Phase noise of the IT6332 A current source; (b) Phase noise of the LPS-305 current source; (c) Analysis graph of the spike noise of different pump power supplies
Fig. 8. Pump intensity noise for different pump power sources. (a) Intensity noise of 6 A (IT6332 A) current source pumping; (b) Intensity noise corresponding to 3 A (LPS-305) current source pumping
Fig. 9. Phase noise for different pump powers. (a) Pump power is 482 mW; (b) Pump power is 964 mW; (c) Analysis graph of different pump power spike noise (Inset: Intensity noise)
Fig. 10. Phase noise at different pump wavelengths. (a) Pump wavelength 915 nm; (b) Pump wavelength 975 nm; (c) Analysis graph of spike noise at different pump wavelengths (Inset: Intensity noise)
Fig. 11. Phase noise at different gain fiber lengths. (a) Gain fiber length is 5 m; (b) Gain fiber length is 2.5 m; (c) Gain fiber length is 1 m; (d) Spikes with different fiber lengths noise analysis chart (Inset: Intensity noise)
Table 1. Experimental parameters for laser phase noise simulation
View tableView in ArticleTable 1. Experimental parameters for laser phase noise simulation
Parameter Value Parameter Value $ {\lambda }_{s} $ 1550 nm $ {\sigma }_{12}\left({\lambda }_{s}\right) $ $ 1.75\times {10}^{-25} $ $ {\rm{m}}^{2} $ $ {\lambda }_{p} $ 915 nm $ {\sigma }_{21}\left({\lambda }_{s}\right) $ $ 2.45\times {10}^{-25} $ $ {\rm{m}}^{2} $ $ {\lambda }_{k1} $ 1575 nm $ {\sigma }_{13}\left({\lambda }_{p}\right) $ $ 4.13\times {10}^{-28} $ $ {\rm{m}}^{2} $ $ {\lambda }_{k2} $ 975 nm $ {\sigma }_{56}\left({\lambda }_{p}\right) $ $ 2.2\times {10}^{-25} $ $ {\rm{m}}^{2} $ $ h $ $6.626\times {10}^{-34}\;{\rm{Js }}$ $ {\sigma }_{65}\left({\lambda }_{p}\right) $ $ 4.38\times {10}^{-27} $ $ {\rm{m}}^{2} $ $ c $ $3\times {10}^{8}\;{\rm{m} }/{\rm{s}}$ $ {\sigma }_{12}\left({\lambda }_{k1}\right) $ $ 1.75\times {10}^{-25} $ $ {\rm{m}}^{2} $ $ {\mathrm{\Gamma }}_{p} $ $ 0.007\;885 $ $ {\sigma }_{21}\left({\lambda }_{k1}\right) $ $ 2.35\times {10}^{-25} $ $ {\rm{m}}^{2} $ $ {\mathrm{\Gamma }}_{s} $ $ 0.925\;4 $ $ {\sigma }_{13}\left({\lambda }_{k2}\right) $ $ 1.35\times {10}^{-25} $ $ {\rm{m}}^{2} $ $ {A}_{eff} $ $418.64\;{\text{μ}{\rm{m} } }^{2}$ $ {\sigma }_{56}\left({\lambda }_{k2}\right) $ $ 1.1\times {10}^{-24} $ $ {\rm{m}}^{2} $ $ {\alpha }_{s} $ $ 0.07\;\mathrm{d}\mathrm{B}/\mathrm{\rm{m}} $ $ {\sigma }_{65}\left({\lambda }_{k2}\right) $ $ 5.84\times {10}^{-25} $ $ {\rm{m}}^{2} $ $ {\alpha }_{p} $ $ 0.22\;\mathrm{d}\mathrm{B}/\mathrm{\rm{m}} $ $ {C}_{cr} $ $ 5.54\times {10}^{-22}\;{\mathrm{\rm{m}}}^{3}/\mathrm{s} $ $ {N}_{Er} $ $ 1.2\times {10}^{25}/{\mathrm{\rm{m}}}^{3} $ $ {\tau }_{21} $ $ 10\;\mathrm{\rm{m}}\mathrm{s} $ $ {N}_{Yb} $ $ 2.16\times {10}^{26}/{\mathrm{\rm{m}}}^{3} $ $ {\tau }_{32} $ $ 1\;\mathrm{n}\mathrm{s} $ $ {\alpha }_{ASE,Yb} $ $ 0.25\;\mathrm{d}\mathrm{B}/\mathrm{\rm{m}} $ $ {\tau }_{65} $ $ 1.5\;\mathrm{\rm{m}}\mathrm{s} $ $ {\alpha }_{ASE,Er} $ $ 0.15\;\mathrm{d}\mathrm{B}/\mathrm{\rm{m}} $ $ {\omega }_{p} $ $6.5\times {10}^{-6}\;{\rm{m}}$ $ \mathcal{E} $ $1.008\times {10}^{-5}/{\rm{K } }$ $ {C}_{v} $ $2.2\times {10}^{6}\;{\rm{J}}\cdot {({\rm{m} }^{3}\cdot {\rm{K} })}^{-1}$ $ {\alpha }_{ap} $ $ 3\;{\rm{m}}^{-1} $ $ {k}_{t} $ $0.84 \;{\rm{W}}\cdot {({\rm{m} }\cdot {\rm{K} })}^{-1}$
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Liangyou Duan, Zhen Liu, Qihao Shen, Xingkai He, Dingfu Zhou, Yongke Zhang. Phase noise of pumping in single-frequency fiber amplifier[J]. Infrared and Laser Engineering, 2023, 52(1): 20220332
Paper Information
Category: Lasers & Laser optics
Received: Apr. 15, 2022
Accepted: --
Published Online: Feb. 9, 2023
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