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Assuming that the light comes from electrons and holes recombining, what is the band gap in...

Assuming that the light comes from electrons and holes recombining, what is the band gap in this laser material?

A semiconductor diode laser emits 1.4 micro meters of light.

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Answer #1

band gap се Momentum

he band gap enegry is the energy required to jump to the conduction band ;

and this energy is converted to light energy

given ,lambda=1.4 x10^-6m

energy =hc/(lambda)

=>E= ((6.62x10^(-34)*3x10^8))/(1.4 x10^-6)

=1.418x10^-19 J

=0.885 eV                                                                       (1 joule =6.24150934

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