Coherent optical source with tunable emission.

摘要

The invention relates to an optical parametric oscillator and an optical parametric amplifier in which oscillator and amplifier parametric interaction is obtained with broadened phase tuning as regards the signal and idler frequencies generated, and this is so in a completely static manner (contrary to the prior art). In order to do this, physical conditions of the interaction are fixed. This may involve a given spacing of the grating recorded in the non-linear material in which the interaction takes place, for a precise pump wavelength. This may also involve a particular orientation of the non-linear material with respect to the direction of the pump beam whose wavelength is matched to the parametric interaction over a wide range of frequencies. Application: tunable-frequency optical power source. <IMAGE>