In PL spectroscopy a luminescent response from the sample is detected at laser light pumping either above quantum well barrier, or in resonantly. Available pump lasers are: semiconductor non-tunable (532, 650, 1064 nm) or tunable lasers, or tunable Ti:Sapphire laser. We could carry out experiments at temperatures from 1.5 to 300 K and magnetic fields up to 7 T. Time-resolved PL could be detected by the streak-camera with femtosecond laser pump.