Inverse Thermal Lens Effects on the Far-Field Blooming of Broad Area Laser Diodes

被引:32
作者
Piprek, Joachim [1 ]
机构
[1] NUSOD Inst LLC, Newark, DE 19714 USA
关键词
Self-focusing; semiconductor device modeling; semiconductor laser; thermo-optic effects;
D O I
10.1109/LPT.2013.2255590
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
High-power broad-area laser diodes often suffer from a widening of the lateral far-field with increasing current (slow-axis far-field blooming). This effect mainly originates in self-heating that generates a lateral thermal lens in the active region. Pedestal heat sinking was recently shown to mitigate the far-field blooming. In this letter, utilizing self-consistent electro-thermal optical simulations, we analyze such a far-field improvement and link it to the formation of an inverse thermal lens. At high injection current, the inverse thermal lens is shown to weaken high-order lateral modes and to even narrow the slow-axis far-field.
引用
收藏
页码:958 / 960
页数:3
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