Classification of lasers

Course Details

Field of Study: Electronics Engineering
Course Name: Optoelectronics
Subtitle: Classification of lasers according to the way of pumping

Gas lasers
eg., He-Ne, He-Cd, Ar+, CO2,
pump an excited state in the electronic structure of gas ions or molecules by discharge
Solid state lasers
eg., YAG:Nd, Al2O3:Ti, Al2O3:Cr(ruby):
pump an excited state of luminescent center (impurity atom) by optical excitation
Laser diodes (Semiconductor lasers)
eg., GaAlAs, InGaN
high density injection of electrons and holes to active layer of semiconductor through pn-junction

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