The output coupler reflectivity is usually around 5 to 15 percent.
Describe the construction and working of co2 laser.
Co2 laser engraved walnut plaques were a popular item in the 1970s.
Laser medium the pump source and the optical resonator.
In this mixture the helium and nitrogen work in concert with the co2to produce the desired lasing effect.
The carbon dioxide laser was one of the earliest gas lasers to be developed.
Construction of ruby laser.
The most fundamental form of a co 2 laser comprise a gas discharge along with a mix close to which specified above along with a total reflector at one end and an output coupler generally a semi reflective coated zinc selenide mirror at the output ending.
The ratio of output power to pump power can be as large as 20.
The co2 laser produces a beam of infrared light with the principal wavelength bands centering on 9 6 and 10 6 micrometers.
Carbon dioxide laser consists of a discharge tube having a diameter of 2 5cm and a length of about 5m.
A ruby laser consists of three important elements.
The helium neon lasers are most commonly used in college laboratories whereas the carbon dioxide lasers are used in industrial applications.
The carbon dioxide laser was the rst high powered infrared laser developed.
Working of helium neon laser.
Reflect most part of the light but allows some part of the light to produce the laser beam.
Its construction is simple and the output of this laser is continuous in the co2 molecular gas laser transition takes place between the vibrational states of carbon dioxide molecules.
In those days co2 lasers were developed for defense but it was soon realized that enough of the wavelength is absorbed in the atmosphere to cause severe problems in pointing and focusing the beam at long distances.
The discharge tube is filled with a mixture of carbon dioxide nitrogen and helium gases in the ratio of 1 2 3 with water vapors.
Pressures maintained are about p for he 7 torr p for n2 1 2 torr.
They are also quite efficient.
This discharge tube is filled with gaseous mixture of co2 active medium helium and nitrogen with suitable partial pressures.
Co2 lasers are no longer considered in this role.
It emits deep red light of wavelength 694 3 nm.
Describe the construction and working of carbon dioxide laser.
In a molecular gas laser laser action is achieved by transitions between vibrational and rotational levels of molecules.
Its output can exceed.
The one in our laboratory is a new version that everything about it is something you can see touch and adjust from lling the tube with gas aligning the optical elements to measuring the output power and wavelengths.
The laser transition takes place between the vibrational states of co2molecules.
Co2 laser principle construction and working.
It consists of a quartz tube 5 m long and 2 5 cm in the diameter.
Ruby laser is one of the few solid state lasers that produce visible light.
Construction of carbon dioxide laser.
Carbon dioxide lasers are the highest power continuous wave lasers that are currently available.
