"$cavitygainedge" 修訂間的差異
出自 DDCC TCAD TOOL Manual
| 行 7： | 行 7： | ||
After obtaining the intrinsic gain of laser diode structure. The program calculate the optical mode and also calculate the <br> |
After obtaining the intrinsic gain of laser diode structure. The program calculate the optical mode and also calculate the <br> |
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<math>\Gamma</math> in each ddcc layer. Ideally, the cavity can be calculated by |
<math>\Gamma</math> in each ddcc layer. Ideally, the cavity can be calculated by |
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| − | <math>\sum \Gamma_{QW} \times gain</math>. |
+ | <math>g_{cav} = \sum \Gamma_{QW} \times gain</math>. |
Effective absorption loss can be calculated by |
Effective absorption loss can be calculated by |
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<math> \alpha_{eff}= \Gamma_{i,loss layer} \times \alpha_{i} </math>. |
<math> \alpha_{eff}= \Gamma_{i,loss layer} \times \alpha_{i} </math>. |
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By the formula, can know that to obtain the gain |
By the formula, can know that to obtain the gain |
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| − | <math> |
+ | <math>g_{cav} > \alpha_{eff} - \frac{1}{2L}\times ln (R1\times R2) </math>. |
於 2018年9月11日 (二) 11:32 的修訂
$cavitygainedge command is used to help to calculate the cavity gain in the end of gain calculation.
The input format is
$cavitygainedge R1 R2 cavity-Length
After obtaining the intrinsic gain of laser diode structure. The program calculate the optical mode and also calculate the
in each ddcc layer. Ideally, the cavity can be calculated by
.
Effective absorption loss can be calculated by
.
By the formula, can know that to obtain the gain
.
