Acta Photonica Sinica, Volume. 54, Issue 2, 0214001(2025)
Exploration of Topological States in SSH Model and Their Applications in Microring Resonators and Semiconductor Lasers
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Fig. 3. Band structures and Berry phase of the SSH model under different parameter conditions
Fig. 4. Topologically protected edge states， bulk states， and the ordering of energy eigenvalues in a finite CROW array under different parameters
Fig. 5. The output solution of the laser rate equations under the topological supermode
Fig. 7. The output solution of the laser rate equations under the non-topological supermode
Fig. 9. The relationship between pump current and laser output intensity
Table 1. Key parameters for topological laser operation
View tableView in ArticleTable 1. Key parameters for topological laser operation
Parameter Symbol Topological supermode value Topological edge state value Photon lifetime 1.6 ps 1.6 ps Spontaneous carrier lifetime 2.2 ns 2.2 ns Normalized excess pump current 0.009 Linewidth enhancement factor 3 3 Gain/loss 0.009 Coupling constant 0.01，0.03 0.028，0.084 Resonance frequency detuning 0 0 Imaginary gauge field -0.549 3、2 2
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Guoguo TIAN, Qin YU, Sujuan ZHANG, Ping GUO, Jiming ZHENG. Exploration of Topological States in SSH Model and Their Applications in Microring Resonators and Semiconductor Lasers[J]. Acta Photonica Sinica, 2025, 54(2): 0214001
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Received: Aug. 2, 2024
Accepted: Oct. 15, 2024
Published Online: Mar. 25, 2025
The Author Email: ZHANG Sujuan (sjzhang1998@163.com), ZHENG Jiming (zjm@nwu.edu.cn)
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