GSTECH
News Center
15
2025
-
05
Technical requirements for laser crystals
The technical requirements for laser crystals involve multiple aspects, including optical properties, physicochemical properties, and processing techniques. These requirements ensure that the laser crystals can operate efficiently and stably, and meet the needs of different application scenarios.
Optical Performance Requirements:
Laser crystals need to have high optical quality, including low absorption rate, narrow emission bandwidth, high transmittance, and low scattering, to ensure efficient laser transmission and conversion.
The optical homogeneity of the crystal is crucial, requiring minimal internal optical inhomogeneity to reduce wavefront distortion and beam divergence.
For specific wavelength laser output, the crystal needs to have a high absorption cross-section and emission cross-section, as well as a low Stokes shift.
The nonlinear optical properties of the laser crystal (such as the nonlinear coefficient) also need to meet specific requirements to improve laser conversion efficiency and output power.
Physicochemical Property Requirements:
Laser crystals must have good thermal stability and be able to operate under high power density without thermal damage.
Thermal conductivity and mechanical stability are key indicators that affect the heat dissipation capacity and service life of laser crystals during high-power operation.
The refractive index change rate of the crystal should be as small as possible to avoid beam quality degradation caused by refractive index changes.
Processing Requirements:
The processing of laser crystals includes cutting, grinding, polishing, and coating. It is necessary to ensure the surface flatness and optical surface accuracy. For example, the surface roughness needs to reach 10-5 level, and the wavefront distortion needs to be controlled within λ/8.
Geometric parameters such as crystal size tolerance, shape tolerance, and non-parallelism need to be strictly controlled to meet specific optical design requirements.
The doping concentration of the crystal needs to be uniformly distributed, and the quality factor needs to reach a certain standard to ensure the stability and efficiency of the laser output.
News
2025-05-15
How to maintain laser crystals
Maintaining laser crystals is an important task aimed at extending their lifespan and preserving their performance.
2025-05-15
Precautions for using laser crystals
Laser crystals are prone to condensation in high-humidity environments, which can lead to reduced power or damage to the laser system.
2025-05-15
Technical requirements for laser crystals
The technical requirements for laser crystals involve multiple aspects, including optical properties, physicochemical properties
2025-05-15
What are the raw materials for laser crystals?
Laser crystals mainly consist of two parts: host crystals and activator ions.
2025-05-15
Laser crystal production process
Laser crystals come in a wide variety of materials, including titanium sapphire, chromium-doped sapphire, and neodymium-doped glass