If the photon output of a laser diode is equal to the bandgap energy, find the wavelength separation between adjacent resonant modes in a GaAs laser with $L=75 \mu \mathrm{m} .$
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42$ eV). Substitute the values: $\lambda = \frac{(4.14 \times 10^{-15} \, \text{eV s})(3 \times 10^8 \, \text{m/s})}{1.42 \, \text{eV}}$ Calculate the wavelength $\lambda$. ** Show more…
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