2. INTRODUCTION:
*Ruby means pink in colour.
*It is the first working laser by Theodore.H
in the year of 1960.
*Ruby combination of Al2o3+Cr3+ ion(dopped) of
weight 0.005%
*3 level laser system
*One of the solid state lase
4. PRINCIPLE:
*Ruby laser completely silvered and partially silvered.
*Form resonant cavity
*Emmits light –emmited radiation,electrons high to
low energy state
*release through partially silverd.
*photon must be parallel to cavity axis.
6. *Each side of the ruby rod – polished
such that one side – completely polished
*Other side- partically polished
*No extranal mirror is required
*Ruby rod kept in helical xenon flash light
*This system is kept in cool champer –
reduse heat
9. *Light emited from ruby laser is red in colour cause
of its wavelength⋋=6943𝐴𝑂
*When Cr 3+ ions coming out it relase enormous
amount of heat-cooling chamber
*It is not a continuous one –pulsated one
Type equation here.
E=h𝛾
E=hc/⋋
Eᾳ1/⋋
10. CHARACTERISTICS:
*Solid state laser
*Produce light in visible range
*Dopant –triple ionized Cr3+ ions=0.05%
*Hard ,durable ,chemically stable,high thermal
conductivity
*Optically pumping
*Coolant-water,any other liquid
*Produce pulses of visible light of wavelenght
⋋= 6943𝐴𝑜
*Highly temperature independent
*Practical laser=1%efficiency’
