Subhash, N; Dr.Sathianandan, K(Cochin University of Science And Technology, August , 1981)
[+]
[-]
Abstract:
Laser engineering is an area in which developments in the
existing design concepts and technology appear at an alarming rate.
Now—a-days, emphasis has shifted from innovation to cost reduction
and system improvement. To a major extent, these studies are aimed
at attaining larger power densities, higher system efficiency and
identification of new lasing media and new lasing wavelengths. Todate
researchers have put to use all the ditferent Forms of matter as lasing
material. Laser action was observed For the first time in a gaseous
system - the He-Ne system. This was Followed by a variety of solidstate
and gas laser systems. Uarious organic dyes dissolved in suitable
solvents were found to lase when pumped optically. Broad band
emission characteristics of these dye molecules made wavelength tuning
possible using optical devices. Laser action was also observed in
certain p-n junctions of semiconductor materials and some of these
systems are also tunable. The recent addition to this list was the
observation of laser action from certain laser produced plasmas.
The purpose of this investigation was to examine the design
and Fabrication techniques of pulsed Nitrogen lasers and high power
Nd: Glass laserso Attempt was also made to put the systems developed
into certain related experiments
Description:
Department of Physics, Cochin University of Science and Technology