檢視 $activateStimEL 的原始碼

$activateStimEL is a command used to enable the calculation of stimulate Emission. <br>

The stimulate emission coefficient is calculated by: <br>
 <math>B_{stim} = B_{0} \times \beta \times \frac{R_{rad}}{R_{th}-R_{rad}}</math>
 <math>R_{stim} = B_{stim} \times n \times p </math>
 <math> B_{0}: </math> is the radiative recombination coefficient
 <math> R_{th}:</math> is the threshold recombination rate
 <math> R_{rad}: </math> is the spontaneous radiative recombination rates decided by  <math> B_{0}\times n \times p </math>
 <math> \beta: </math> is the fitting coefficient. 

The way to activate the command is as following
 $activateStimEL
 Method QW_number 1st_QW_layerNum 2nd_QW_layerNum 3rd_QW_layerNum ...
 <math> \beta_{1}~~  R_{th,1}  ~~ P3_1~~ P4_1</math>
 <math> \beta_{2}~~  R_{th,2}  ~~ P3_2~~ P4_2</math>
 <math> \beta_{3}~~  R_{th,3}  ~~ P3_3~~ P4_3</math>
 <math> \beta_{4}~~  R_{th,4}  ~~ P3_4~~ P4_4</math>
 <math> \beta_{5}~~  R_{th,5}  ~~ P3_5~~ P4_5</math>
 .....
 ..... total N layers (regions)
 <math> \beta_{N}~~  R_{th,N}  ~~ P3_N~~ P4_N </math>

 Method: 1 -> Given <math> \beta</math> and <math>R_{th} </math> of each layer. If this is layer is not QW, set <math> \beta=0.0~~,and~~R_{th}=0.0 </math>
 Method: 2 -> defined for future expansion
 <math>P3</math>, <math>P4</math> : Not used. It might be used when Method 2 is activate in the future


 
For example: 
 $activateStimEL
 1 1 2 
 0.000 5.0e27 0.00 0.00
 1.000d-4 5.0e27 0.00 0.00
 0.000 5.0e27 0.00 0.00
 0.000 5.0e27 0.00 0.00

In this command, use method 1. There is 1 QW which is the 2nd layer. The <math> \beta </math> and <math> R_{th} </math> of the 2nd layer is 1.0e-4 and 5.0e27 <math> (1/cm^{3}s) </math>