Laser cavity is an indispensable key component in modern technology, which promotes the development of many technologies and applications. From medical and communications to manufacturing and research, laser cavities bring us unprecedented opportunities and innovation.
A laser cavity is a closed space filled with active media capable of generating and amplifying a laser beam. It can come in different constructions and designs to suit different laser types and application needs. A typical laser cavity includes mirrors, optical windows and energy pump sources.
The working principle of the laser cavity is based on the concept of an optical resonator, which uses mirrors to propagate the beam back and forth repeatedly, amplifying photons through the processes of stimulated emission and stimulated absorption. By adjusting the length of the cavity and the reflection coefficient of the mirror, light of specific wavelengths can be selectively amplified. This allows the laser to produce a highly consistent, high-purity and high-energy-density beam.
Laser cavities have a wide range of applications. In the medical field, lasers play an important role in eye surgeries, skin treatments, and cancer treatments. The laser’s highly concentrated energy and controllability make it an ideal tool for precise cutting and tissue heating.
In the field of communications, the development of fiber lasers provides the foundation for high-speed and stable fiber optic communications. The precise control and frequency stability of the laser cavity make data transmission more reliable and efficient.
In manufacturing, laser cutting and welding technology have become indispensable tools. The laser cavity provides a high-energy-density beam that can easily cut and weld metals and other materials. This greatly improves production efficiency and quality.
In addition to the above application fields, laser cavities are also widely used in scientific research, laser printing, lidar and military technology. Its importance continues to grow, driven by advances in technology and innovation.
