HETERODYNE NONDEGENERATE PUMP-PROBE MEASUREMENT TECHNIQUE FOR GUIDED-WAVE DEVICES

We describe a new heterodyne nondegenerate pump-probe waveguide measur ement technique that permits independent control of wavelengths, pulse widths, and polarizations of the pump and probe pulses in a collinear geometry. This technique provides both time- and spectral-domain info rmation and can be applied to transmission and index measurements alik e. We demonstrate this technique for the measurement of gain dynamics in a strained-layer single-quantum-well diode laser.