Abstract
The modulation properties of optical injection-locked quantum cascade lasers (QCLs) are investigated theoretically via a simple low dimensional rate equation model. It is found that both strong injection level and positive optical frequency detuning increase the modulation bandwidth, while a large linewidth enhancement factor (LEF) contributes to the enhancement of the peak magnitude in the intensity modulation (IM) response. As opposed to conventional injection-locked interband lasers, it is demonstrated that no dip occurs in the QCL's IM response, which is beneficial for a series of broadband microwave photonic applications. Computations also show that the value of the LEF can critically modify both the locking and stability regions on the optical frequency detuning injection level map.
| Original language | English |
|---|---|
| Article number | 063104 |
| Journal | Journal of Applied Physics |
| Volume | 113 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Feb 14 2013 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Rate equation analysis of injection-locked quantum cascade lasers. / Wang, Cheng; Grillot, Frédéric; Kovanis, Vassilios; Even, Jacky.
In: Journal of Applied Physics, Vol. 113, No. 6, 063104, 14.02.2013.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Rate equation analysis of injection-locked quantum cascade lasers
AU - Wang, Cheng
AU - Grillot, Frédéric
AU - Kovanis, Vassilios
AU - Even, Jacky
PY - 2013/2/14
Y1 - 2013/2/14
N2 - The modulation properties of optical injection-locked quantum cascade lasers (QCLs) are investigated theoretically via a simple low dimensional rate equation model. It is found that both strong injection level and positive optical frequency detuning increase the modulation bandwidth, while a large linewidth enhancement factor (LEF) contributes to the enhancement of the peak magnitude in the intensity modulation (IM) response. As opposed to conventional injection-locked interband lasers, it is demonstrated that no dip occurs in the QCL's IM response, which is beneficial for a series of broadband microwave photonic applications. Computations also show that the value of the LEF can critically modify both the locking and stability regions on the optical frequency detuning injection level map.
AB - The modulation properties of optical injection-locked quantum cascade lasers (QCLs) are investigated theoretically via a simple low dimensional rate equation model. It is found that both strong injection level and positive optical frequency detuning increase the modulation bandwidth, while a large linewidth enhancement factor (LEF) contributes to the enhancement of the peak magnitude in the intensity modulation (IM) response. As opposed to conventional injection-locked interband lasers, it is demonstrated that no dip occurs in the QCL's IM response, which is beneficial for a series of broadband microwave photonic applications. Computations also show that the value of the LEF can critically modify both the locking and stability regions on the optical frequency detuning injection level map.
UR - http://www.scopus.com/inward/record.url?scp=84874331797&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84874331797&partnerID=8YFLogxK
U2 - 10.1063/1.4790883
DO - 10.1063/1.4790883
M3 - Article
VL - 113
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
IS - 6
M1 - 063104
ER -