Temperature Compensation for Threshold Current and Slope Efficiency of 1.3µm InAs/GaAs Quantum-Dot Lasers by Facet Coating Design
XU Peng-Fei1, YANG Tao1**, JI Hai-Ming1, CAO Yu-Lian2, GU Yong-Xian1, WANG Zhan-Guo1
1Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083 2Nano-Optoelectronics Laboratory, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083
Temperature Compensation for Threshold Current and Slope Efficiency of 1.3µm InAs/GaAs Quantum-Dot Lasers by Facet Coating Design
XU Peng-Fei1, YANG Tao1**, JI Hai-Ming1, CAO Yu-Lian2, GU Yong-Xian1, WANG Zhan-Guo1
1Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083 2Nano-Optoelectronics Laboratory, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083
摘要We demonstrate a technique of temperature compensation for 1.3 µm InAs/GaAs quantum-dot (QD) lasers by facet coating design. The key point of the technique is to make sure that the mirror loss of the lasers decreases as the temperature rises. To realize this, we design a type of facet coating by shifting the central wavelength of the facet coating from 1310 nm to 1480 nm, whose reflectivity increases as the emission wavelength of the lasers red-shifts. Consequently, the laser with the new facet coating exhibits a characteristic temperature doubled in size and a more stable slope efficiency in the temperature range from 10°C to 70°C, compared with the traditional one with a temperature-independent mirror loss.
Abstract：We demonstrate a technique of temperature compensation for 1.3 µm InAs/GaAs quantum-dot (QD) lasers by facet coating design. The key point of the technique is to make sure that the mirror loss of the lasers decreases as the temperature rises. To realize this, we design a type of facet coating by shifting the central wavelength of the facet coating from 1310 nm to 1480 nm, whose reflectivity increases as the emission wavelength of the lasers red-shifts. Consequently, the laser with the new facet coating exhibits a characteristic temperature doubled in size and a more stable slope efficiency in the temperature range from 10°C to 70°C, compared with the traditional one with a temperature-independent mirror loss.
XU Peng-Fei;YANG Tao**;JI Hai-Ming;CAO Yu-Lian;GU Yong-Xian;WANG Zhan-Guo
. Temperature Compensation for Threshold Current and Slope Efficiency of 1.3µm InAs/GaAs Quantum-Dot Lasers by Facet Coating Design[J]. 中国物理快报, 2011, 28(4): 44201-044201.
XU Peng-Fei, YANG Tao**, JI Hai-Ming, CAO Yu-Lian, GU Yong-Xian, WANG Zhan-Guo
. Temperature Compensation for Threshold Current and Slope Efficiency of 1.3µm InAs/GaAs Quantum-Dot Lasers by Facet Coating Design. Chin. Phys. Lett., 2011, 28(4): 44201-044201.
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2011, Vol. 28 
