ruby laser

Ruby Laser - In 1960, T .H. Maiman constructed the first laser using a Ruby crystal. Ruby is a crystalline form of silica(Al 2 O 3 ) with a slight natural doping of chromium. It has the following advantages for being used as a laser. (i) I..

Ruby is a crystalline form of silica(Al 2 O 3 ) with a slight natural doping of chromium. It has the following advantages for being used as a laser..

Communication Systems..

.H. Townes and his co-workers. They discovered MASER. The principle of maser was adopted for the radiations of visible region by A. Schawloo in collaboration with Townes in the year 1958. The first laser device was developed by T .H. Maiman in the year 1960. It was "Fabry Parot Optical ca..

. If conditions are right, state E 2 can then become more heavily populated than state E 1 , thus providing the needed population inversion. A stray photon of the right energy can then trigger an avalanche of stimulate emission events, resulting in the production of laser light. A number ..

It is an external source, which supplies energy to obtain population inversion. The pump can be optical, electrical or thermal. In the ruby laser, we use optical pumping. In the He-Ne laser, we use electric discharge pumping. The energy supplied by the pump excites th..

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