The "Ruler" for Measuring Laser Crystal Performance
Category:
Industry News
Release date:
2025-09-09
When evaluating the quality of a laser crystal, the key parameters to consider are primarily the following:
Absorption and Emission Cross-section "This represents the efficiency with which the crystal absorbs pump light and generates laser light. The larger the cross-section, the higher the efficiency typically is."
Fluorescence Lifetime : The average lifetime of activated ions in the metastable energy level. A lifetime that is either too long or too short is detrimental to energy storage and extraction, and must be matched to the laser's operating mode—whether continuous or pulsed.
Thermal Conductivity : This is a core performance indicator for high-power lasers. When the crystal is operating, it generates significant heat. The higher the thermal conductivity, the better the heat dissipation—effectively minimizing thermal lensing effects and thermal stress, thereby ensuring the laser delivers both high power and superior-quality output.
Damage Threshold : The maximum laser power density that a crystal can withstand without being damaged. This determines the upper limit of the laser's maximum output power.
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