Optoelectronics, an Introduction |
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absorption amplitude angle anode applied atoms bandgap bandwidth beam beam divergence cavity cell coefficient coherence conduction band crystal density depletion region detector device diagram diffraction diode direction dispersion doped effect electric field electro-optic electron emission emitted emitter energy gap energy levels equation example excitation frequency fringes GaAs gain given hence holes illustrated in Fig impurity incident increase indirect bandgap irradiance laser lattice layer light losses material maximum medium mirrors mode modulation molecules n₁ n₂ noise operation optical oscillations output p-n junction phase phosphor photocathode photoconductive photodiode photon plane polarized population inversion propagation pulse pumping Q-switching quantum efficiency radiation recombination reflected refractive index resistor semiconductor shot noise shown in Fig signal silicon spectral step index fiber surface temperature thermal threshold tion transition typical valence band velocity voltage wave wavefront waveguide wavelength zero