A baya, Raman spectrometers amfani holographic grating da mahara watsa matakai don cimma wani babban mataki na Laser kin amincewa. A baya, photomultipliers kasance detectors na zabi ga dispersive Raman kafa, wanda ya sa a cikin dogon saye sau. Duk da haka, na zamani kayan aiki kusan ko'ina yana amfani da notch ko gefen tacewa ga Laser kin amincewa da spectrographs ko dai axial (AT), C<unk> Turner (CT) monochromator, ko (Fourier spectroscopy) FT, da kuma CCD Tambaya: Menene ya sa sakamakon amfani da photomultipliers a matsayin mummunan sakamako ga Raman dispersive kafa?
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