Phase Modulation Of Radiation Research Articles

Amplitude and phase modulation of radiation in a travelling-wave amplifier based on a laser diode

An analytical solution (in quadratures) to the problem of propagation of quasi-monochromatic optical signal in a semiconductor amplifier under harmonic modulation of its pump current is obtained for the first time. It is shown that the modulation of the output radiation has amplitude and phase features. The relation is found between the coefficients of the amplitude and phase modulation with the effect of gain saturation taken into account. Adequacy of the results obtained is confirmed experimentally.

Classical scattering of radiation by an oscillating electron

It is shown that classically described scattering of light by an oscillating electron leads to a spectrum consisting of many stokes and antistokes lines. For this scattering formulas for n-th order correlation functions are given. It appears that this process can be interpreted as phase modulation of radiation.