What is a laser crystal?

Laser crystal refers to a crystal material that can convert input energy into laser output of a specific wavelength under the action of an external excitation source (such as optical pumping, electrical excitation, etc.) through the principle of stimulated radiation amplification. Its working principle is based on the energy level structure of atoms or ions. When external energy pumps the laser crystal, the activated ions transition from the ground state to the excited state, and under certain conditions, a population inversion distribution is formed. At this time, stimulated radiation dominates, and the generated photons are continuously amplified through the feedback of the resonant cavity, and finally the laser is output.

Laser crystals are used in a variety of fields, including material processing, medical technology, telecommunications, and LIDAR applications.

EBO provides a diverse range of laser crystals, such as Nd:YAG, Nd:Ce:YAG, CTH:YAG, Er:YAG, Yb:YAG, and BBO crystals. These crystals can be tailored to meet the specific needs of customers' applications.

What are the characteristics of laser crystals?

High gain: Laser crystals should have a high gain coefficient, which can achieve effective amplification of lasers in a short length and increase the laser output power.

Wide fluorescence spectrum: A wider fluorescence spectrum is conducive to achieving wide-tuned laser output and meeting the needs of different applications for laser wavelengths.

Good thermal conductivity: During the laser generation process, a certain amount of heat will be generated. Good thermal conductivity helps to dissipate heat in time, reduce the thermal lens effect of the crystal, and ensure the stability of laser output and beam quality.

Good optical uniformity: Laser crystals with good optical uniformity can reduce scattering and distortion during laser transmission, improve the laser beam quality and output stability.

Excellent mechanical properties: With high hardness, strength and fatigue resistance, it can withstand external mechanical stress and thermal stress, ensuring the reliability of the crystal during long-term use.