The importance of laser cavity
The laser cavity is the core component of the laser and is the key structure for generating and amplifying the laser beam. Generally speaking, a laser cavity is a tube or cavity consisting of two mirrors with high reflectivity and partial transmittance, which selectively amplify specific frequencies of the laser by adding an amplifying medium (such as a concentrated alloy or semiconductor material) therein model.
The working principle of the laser is to emit a beam of a certain wavelength into the laser cavity and then reflect it back. Through multiple back and forth reflections, the light waves in different directions gradually converge to the same frequency mode, ultimately producing a powerful, single beam. Laser beam with good color properties.
The performance of the laser cavity directly affects key parameters such as the output power, beam quality, and frequency stability of the laser. Several factors need to be considered when designing a laser cavity, such as the reflectivity of the mirror, the characteristics of the amplification material, and the geometry of the cavity.
In practical applications, the laser cavity is often mounted on a bracket to ensure its stability and control the output direction and spatial shape of the laser beam. In addition, in order to further improve the performance of the laser, it is necessary to add Q-switched components, beam rotators, verticalizers and other components to optimize the output characteristics of the laser.
In short, the laser cavity is one of the core components of the laser, and its design and optimization are crucial to the performance of the laser.
