[3] He was known for his work on correlated electronic states in two dimensional systems using photoluminescence and resonant inelastic light scattering methods.
[11][12][13] In 1979, using resonant inelastic light scattering, Pinczuk and his colleagues made the first observation of intersubband excitations in the two dimensional electron systems of Gallium Arsenide (GaAs) heterostructures.
[16] The resonant inelastic light scattering technique, remains one of the few methods that can directly access neutral excitations of electrons in semiconductor microstructures.
[9] Later, Pinczuk contributed to the understanding of low-lying neutral spin-conserving and spin-flip excitations of the fractional quantum Hall fluids.
[5][17] Pinczuk was elected a fellow of the American Physical Society in 1987 "for his pioneering work on the application of light-scattering to study the properties of two-dimensional electron systems.