Are you familiar with the physical properties of laser mixtures?
First, in today’s defense industry, modern rockets rely on liquid oxygen as an excellent oxidizer; liquid oxygen is also used as an oxidant in supersonic aircraft.
Many users are not very familiar with the physical properties of laser mixtures. Today, we will provide a detailed introduction:
Lasers in which the laser gain medium is primarily a gas or vapor are collectively referred to as gas lasers. Gas lasers are generally classified into atomic gas lasers, ion gas lasers, molecular lasers, and excimer lasers. There are numerous methods for exciting gas lasers; the most common is gas discharge excitation, but other techniques include electron-beam excitation, pneumatic excitation, chemical excitation, optical excitation, and nuclear-particle excitation. Like liquid lasers, solid-state lasers, and semiconductor lasers, gas lasers have been successfully commercialized and are now widely used in industrial and agricultural production, scientific research, national defense, healthcare, and many other fields. A key characteristic of gas lasers is that their laser gain medium consists either of a mixed gas or a single pure gas.
Since the purity of the constituent gases in a laser gas mixture directly affects laser performance, the presence of impurities such as oxygen, water, and hydrocarbons can lead to power loss at the mirrors and electrodes and cause instability in laser emission. Therefore, stringent purity requirements are imposed on the components of the laser gas mixture, and the cylinders used for packaging these mixtures must be dried prior to filling to prevent contamination. If helium–neon lasers are regarded as first-generation gas lasers, carbon dioxide lasers as second-generation gas lasers, then krypton fluoride lasers, which will be extensively used in semiconductor manufacturing, can be classified as third-generation lasers.
That concludes our explanation of the physical properties of laser mixtures. We are confident that this has piqued your interest even further.
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