| Citation: |
Zhang Xing, Ning Yongqiang, Sun Yanfang, Zhang Yan, Liu Guangyu, Peng Hangyu, Li Zaijin, Qin Li, Liu Yun, Wang Lijun. Light-current characteristics of vertical-cavity surface-emitting lasers with external optical feedback[J]. Journal of Semiconductors, 2010, 31(3): 034006. doi: 10.1088/1674-4926/31/3/034006
Zhang X, Ning Y Q, Sun Y F, Zhang Y, Liu G Y, Peng H Y, Li Z J, Qin L, Liu Y, Wang L J. Light-current characteristics of vertical-cavity surface-emitting lasers with external optical feedback[J]. J. Semicond., 2010, 31(3): 034006. doi: 10.1088/1674-4926/31/3/034006.
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Light-current characteristics of vertical-cavity surface-emitting lasers with external optical feedback
doi: 10.1088/1674-4926/31/3/034006
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Abstract
The influence of external optical feedback (OFB) on the light-current characteristics of the vertical-cavity surface-emitting lasers (VCSELs) was investigated theoretically and experimentally. By calculating the OFB sensitivity parameter, the OFB sensibility of the VCSELs was compared with the edge emitting lasers’ (EELs). Based on the compound cavity theory, the light-current characteristics parameters of the VCSELs with external OFB, such as the threshold current and the slope efficiency, were calculated. The results of the experimental investigation indicated that the threshold current of the VCSELs with different DBR reflectivity decreased on different degrees, accompanied with a decrease of slope efficiency when under 10% feedback ratio of the external OFB, which is in good agreement with the theoretical calculation. -
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