ruby laser light

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..

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Laser Light is Highly Directional - A laser beam departs from strict parallelism only because of diffraction effects, determined by the wavelength and the diameter of the exit aperture. Light from other sources can be made into an approximately parallel beam ..

This property is related to the parallelism of the laser beam. As for star light, the size of the focused spot for a laser beam is limited only by diffraction effects and not by the size of the source. Flux densities for focused laser light of 10 1..

Wave trains for laser light may be several hundred kilometers long. Interference fringes can be set up by combining two beams that have followed separate paths whose lengths differ by as much as this amount. The corresponding coherence length for light from a tungsten..

.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...

It is material in which the laser action is made to take place. It may be solid, liquid or gas. Many lasers are named after the material used e.g. ruby laser, He-Ne laser, CO 2 laser, Nd: YAG laser etc. The most important chara..

Applications of Lasers - The development of the laser has opened many avenues of investigation and improved many others. The important characteristics that have contributed to its usefulness in these many areas are tile coherence, monochromaticity and great intensity of its radi..