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Images and Emission Spectra of Micro Discharge Lamps

A variety of rare gas discharge lamps and some additional lamps containing H2, O2 and N2 are available from the Austrian company SmartElements. When excited by a 2 kV, 20 mA power supply operating at 35 kHz, these lamps provide bright emission sources that are very useful for calibrating spectrometers. Below are photos of a few of these lamps and their emission spectra, as measured by the concave grating spectrometer described here.
Argon (Ar)
Helium (He)
Hydrogen (H2)
Nitrogen (N2)