Spectroscopic techniques have been and continue to be extremely fruitful in discovering arid
delineating novel phenomena exhibited by semiconductors and in characterizing their properties. In
turn, discoveries in semiconductor physics made with spectroscopic techniques have led to some of
the most sensitive infrared detectors and highly monochromatic single frequency as well as tunable
solid state lasers; spectroscopy under high resolution is inconceivable in their absence.
Anant K. Ramdas,
"Advances in semiconductor physics through spectroscopy", Proc. SPIE 1336, Raman and Luminescence Spectroscopies in Technology II, (1 November 1990); doi: 10.1117/12.22891; https://doi.org/10.1117/12.22891