The most common type of the dye variety is the Rhodamine 6G in methanol, while the gaseous type consists of krypton-ion and argon-ion varieties.  
An important method of maintaining population inversion in this device is called Q-switching, which involves the modification of the resonance characteristics of its cavity.  The most common type of the dye variety is the Rhodamine 6G in methanol, while the gaseous type consists of krypton-ion and argon-ion varieties.  In 1960, Theodore Maiman invented the solid-state type, which utilized the process of pump flashing a ruby in order to produce a uniform red beam of radiation.  FTP, identify this device that is created via light amplification through stimulated emission of radiation.
An important method of maintaining population inversion in this device is called Q-switching, which involves the modification of the resonance characteristics of its cavity.  
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