Recent progress of infrared photoreflectance and modulated photoluminescence techniques was outlined with special attention focused on the significant improvement of signal-to-noise ratio,spectral resolution and time consumption relative to the conventional techniques.

Photoluminescence (PL) and photoreflectance (PR) spectra of GaInNAs/GaAs multiple quantum wells (MQWs) grown on GaAs substrate by MBE are measured over a range of temperature and excitation power density.

The experimental results in GaAs/AlGaAs and strained InGaAs/GaAs multiple quantum wells by using DR technique at room temperature were presented, and compared with the experimental results of photoreflectance (PR) spectra and the theoretical values.

The photoluminescence, photoreflectance and Raman spectra of ZnTe/Zn 1 x Mn x Te superlattice samples grown by MBE technique were studied from 11 to 80K.

Quantification of phenolic compound in Magnolia officinalis herb by near infrared reflectance spectroscopy;

Using intact kernel rapeseeds as test samples, various methods for spectra pretreatment and different regression methods were compared to establish an optimal regression equation for rapeseed erucic acid and glucosinolate content analysis by near infrared reflectance spectroscopy ( NIRS) .