Cascade Magnetocumulative Generator on the Basis of Inductively Coupled Circuits with a Variable Coupling Coefficient

2018 ◽  
Keyword(s):  
Coupling Coefficient ◽  
Inductively Coupled ◽  
Magnetocumulative Generator ◽  
Coupled Circuits ◽  
Variable Coupling

Processing of deeply etched GaAs/AlGaAs quantum cascade lasers with grating structures

2004 ◽  
Vol 829 ◽  
Author(s):  
S. Golka ◽  
M. Austerer ◽  
C. Pflügl ◽  
W. Schrenk ◽  
G. Strasser
Keyword(s):  
Coupling Coefficient ◽  
Inductively Coupled Plasma ◽  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Mid Infrared ◽  
Quantum Cascade ◽  
Inductively Coupled ◽  
Icp Etching ◽  
Grating Coupling ◽  
Cascade Lasers

ABSTRACTGratings in GaAs/AlGaAs mid-infrared quantum cascade lasers (QCLs) are fabricated with a structure depth of more than 10 μm. A N2/SiCl4 inductively coupled plasma reactive ion etching (ICP-RIE) process was employed to achieve extremely smooth sidewalls and selectivities to the SiNX etch mask of up to 70:1. EDX spectra measured on as-etched samples show that sidewall etch inhibition is caused by a thin Si containing layer on the sidewalls that is formed simultaneously with ICP etching of GaAs at the bottom of the trenches. To demonstrate device application gratings with a pitch of 1.72 μm are applied to long rib waveguide -based QCLs emitting at λ = 10.7 μm. When etched laterally together with the rib the grating gives rise to stable single mode emission up to 295K from these QCLs. The respective grating coupling coefficient is determined to be κ = 29 cm-1.

Optical coupling of two diode lasers with variable coupling coefficient

1974 ◽  
Vol 23 (2) ◽  
pp. 675-682 ◽  
Author(s):  
R. Salathé ◽  
C. Voumard ◽  
H. Weber
Keyword(s):  
Coupling Coefficient ◽  
Diode Lasers ◽  
Optical Coupling ◽  
Variable Coupling

Design and analysis of a novel coupled inductor structure with variable coupling coefficient

2018 ◽  
Vol 11 (6) ◽  
pp. 961-967 ◽  
Author(s):  
Milan Pajnić ◽  
Predrag Pejović ◽  
Obrad Aleksić
Keyword(s):  
Coupling Coefficient ◽  
Variable Coupling
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