Which pumping method is used in CO2 lasers?

Such a laser is electrically pumped via an electrical gas discharge, which can be operated with DC current, with AC current (e.g. 20–50 kHz) or in the radio frequency (RF) domain.

What is the role of N2 gas in CO2 laser?

The functioning of CO2 Laser The nitrogen molecules which exist in the gas mixture gain energy after stimulating through an electric current. In other words, you can say that the nitrogen molecules get excited. Thus, we use nitrogen in this process as it can hold this state of excitement for a longer time.

What is active medium in CO2 laser?

The active laser medium is a mixture of 3 gases consisting of 10–20% carbon dioxide, 10–20% nitrogen, and the remainder is helium. The carbon dioxide laser produces a specific wavelength of light in the infrared spectrum (10,600 nm).

What is meta stable state in laser?

In laser: Energy levels and stimulated emissions. In a three-level laser, the material is first excited to a short-lived high-energy state that spontaneously drops to a somewhat lower-energy state with an unusually long lifetime, called a metastable state.

How do you make a carbon dioxide laser?

Despite being able to cut wood, paper, and a bunch of other everyday materials, a carbon dioxide laser is actually surprisingly simple. All you need to do is fill a tube with CO2, put some mirrors and lenses on each end, and run an electric current through the gas.

What is AQ switch?

A quality-switched laser (Q-Switched) is a non-invasive laser that creates high-intensity pulsed beam light. The Q-Switched laser beam pulses last a mere billionth of a second. 1 The energy emitted from a Q-switched laser is concentrated into very powerful pulses.

What is the pumping mechanism in ruby laser?

Explanation: The Ruby rod is placed inside a xenon flash lamp so as to provide sufficient amount of light to cause excitation of atoms. This kind of pumping is called optical pumping.

How do you make a laser metastable state?

In a three-level laser, the material is first excited to a short-lived high-energy state that spontaneously drops to a somewhat lower-energy state with an unusually long lifetime, called a metastable state.