This spectrometer is capable to determine photon wavelength or energy emitted from a material when it is heated using ceramic heat source or heater. This spectrometer apparatus will be able to measure test material luminescence and its dispersed spectrum. The spectrum in turn can provide the recombination process during thermoluminescence mechanism. The recombination process of thermoluminescence mechanism allows for the determination of material trap depth, energy-wavelength dependency and efficiency of the luminescence process.