Chip-Modulator for the all-electic laser beam angular control by quantum-confined Stark effect

Ultrafast all-electric laser beam angular scan system was developed. Chip-modulator based on quantumconfined semiconductor waveguide heterostructure with surface diffraction grating was investigated. Theoretical and experimental studies of absorption and refractive index modulation of two tunnel-coupled quantum wells were carried out. High value refractive index modulation at low absorption spectral range was demonstrated.