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The traditional Vetical cavity surface emitting laser (VCSEL) circular electrode structure had the problems such as the uneven of current injection and poor beam quality, this paper we presented a new designed method VCSEL electrode structure, namely radiation electrode VCSEL, thereby improved the uniformity of the current injection and laser beam quality. Experimental, we prepared red VCSEL using...
The traditional VCSEL has the problem of uneven current injection. In order to solve this problem, we designed a new electrode structure. Then we used ANSYS to simulate the thermal characteristics of VCSEL. The results showed that VCSEL with the new electrode structure had a better cooling effect than the traditional electrode structure.
We report the fabrication and the testing of a novel high-power VCSEL with AlN film passivation layer in this paper. The analysis on the high-power VCSEL show that the AlN film passivation layer can improve the opto-electric characteristics of high-power VCSEL, reduce the thermal resistance of VCSEL and enhance the ability of the heat dissipation; The AlN film passivation layer and the SiO2 film passivation...
In this paper, optical and electrical properties of the traditional and intracavity-contacted structures of 980nm VCSELs were simulated in the case of the same epitaxial growth by Crosslight PICS3D. Threshold current of the traditional structure device was 8.76mA and the one of intracavity-contacted structure device was 6.23mA. When operating current was 25 mA, the output power of the traditional...
A new device structure is reported to improve performance of vertical cavity surface-emitting lasers (VCSELs). Namely many cylindrical holes (CH) or noncontiguous ring trench (NRT) are etched instead of the conventional ring trench (RT). The mesa with such new structure offers radial bridges for current injection, the connecting Ti-Au metal between ohmic contact and bonding pad does not have to cross...
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