Turn-on delay of VCSEL and effect of carriers recombination

被引:0
|
作者
Zhang, XX [1 ]
Pan, W [1 ]
Liu, YZ [1 ]
Chen, JG [1 ]
机构
[1] Univ Elect Sci & Technol China, Natl Key Lab Opt Commun, Dept Optoelect Technol, Chengdu 610054, Peoples R China
关键词
VCSELs; rate equations; turn-on delay; time evolution of carriers; Auger effect;
D O I
10.1117/12.480967
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
It is well known that when the laser is turned on by increasing the device current from its initial value J(0) to the above-threshold value J greater than J(th), stimulated recombination is delayed by t(d), the time during which the carrier population rises to its threshold value. On the besis of the rate equations for quantum well VCSEL, a closed expression describing the time evolution of the carrier density within the turn-on period of a VCSEL has been derived for the case that the Auger effect is considered with a term proportional to the cube of the carrier density. The theoretic results are simulated with Simulink of MATLAB software. As a result, an explicit analytical expression for the turn-on delay of the VCSEL has also been deduced. Since the turn-on delay is an important parameter of a semiconductor laser, intensified studies on this parameter have been carried out in the past years.
引用
收藏
页码:567 / 571
页数:5
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