Mh. Chou et al., Stability and bandwidth enhancement of difference frequency generation (DFG)-based wavelength conversion by pump detuning, ELECTR LETT, 35(12), 1999, pp. 978-980
The authors report on a method for enhancing the operating stability and si
gnal bandwidth of difference-frequency-generation-based wavelength conversi
on by detuning the pump from the degenerate phase matching wavelength; both
can be further enhanced by using nonuniform quasi-phase-matching structure
s.