A GaAs injection laser has a threshold current density of 2.5*103Acm-2 – McqOptions

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1.	A GaAs injection laser has a threshold current density of 2.5*10³Acm^-2 and length and width of the cavity is 240 m and 110 m respectively. Find the threshold current for the device.
A.	663 mA
B.	660 mA
C.	664 mA
D.	712 mA
Answer» C. 664 mA

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