Construction And Working Of Co2 Laser Ppt

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.

Construction and working of co2 laser ppt. For simplicity let us assume e 1 is the lower energy level and e 2 is the higher energy level. After staying for up to 10 8 second ions get transmitted to the metastable state. Co2 lasers are no longer considered in this role. It is a very efficient laser.

Construction of ruby laser. Ruby laser is one of the few solid state lasers that produce visible light. The working of a laser diode involves 3 processes. Laser medium the pump source and the optical resonator.

Co2 molecular gas laser. The active laser medium laser gain amplification medium is a gas discharge which is air or water cooled depending on the power being applied. Construction and working of he ne laser 15. When the flash lamp light will be flashed on ruby rod the chromium ions excited to higher energy states.

Let us first understand the process of absorption. Working of helium neon laser. Co2 laser was the first molecular gas laser developed by indian born american scientist prof c k n pillai it is a four level laser and it operates at 10 6 μm in the far ir region. Consider 2 energy levels e 1 and e 2.

Absorption spontaneous emission and stimulated emission. It emits deep red light of wavelength 694 3 nm. Co2 molecular gas laser. Helium neon laser usually called a he ne laser is a type of gas laser in which a mixture of helium and neon gas is used as gain medium.

Its construction is simple and the output of this laser is continuous. Co2 laser engraved walnut plaques were a popular item in the 1970s. A ruby laser consists of three important elements. Reflect most part of the light but allows some part of the light to produce the laser beam.

The filling gas within the discharge tube consists of around 10 20 carbon dioxide co 2 around 10 20 nitrogen n 2 a few percent hydrogen h 2 and or xenon xe usually only used in a sealed tube and the remainder of the. It was the first molecular gas laser developed by indian born american scientist prof c k n pillai. In co 2 molecular gas laser transition takes place between the vibrational states of carbon dioxide molecules. This video lecture will explain the construction of carbon dioxide laser.