A general multi-mode lumped equivalent circuit model for circular cMUT cells

2016 ◽  
Author(s):  
Shengping Mao ◽  
Xavier Rottenberg ◽  
Liwang Liu ◽  
Veronique Rochus ◽  
Guilherme Brondani Torri ◽  
...  
Keyword(s):  
Equivalent Circuit ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Lumped Equivalent Circuit ◽  
Multi Mode

scholarly journals Equivalent Circuit Model of High-Performance VCSELs

Photonics ◽  
2020 ◽  
Vol 7 (1) ◽  
pp. 13 ◽  
Author(s):  
Marwan Bou Sanayeh ◽  
Wissam Hamad ◽  
Werner Hofmann
Keyword(s):  
Equivalent Circuit ◽  
High Performance ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Rate Equations ◽  
Hole Burning ◽  
Cavity Surface ◽  
Carrier Distribution ◽  
Emitting Lasers ◽  
Multi Mode

In this work, a general equivalent circuit model based on the carrier reservoir splitting approach in high-performance multi-mode vertical-cavity surface-emitting lasers (VCSELs) is presented. This model accurately describes the intrinsic dynamic behavior of these VCSELs for the case where the lasing modes do not share a common carrier reservoir. Moreover, this circuit model is derived from advanced multi-mode rate equations that take into account the effect of spatial hole-burning, gain compression, and inhomogeneity in the carrier distribution between the lasing mode ensembles. The validity of the model is confirmed through simulation of the intrinsic modulation response of these lasers.

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