Cr:YAG Laser Crystal Overview
Cr:YAG (Chromium-Doped Yttrium Aluminum Garnet) is a laser crystal doped with chromium ions, widely used as a gain medium in solid-state lasers. It emits laser light primarily in the near-infrared (NIR) spectrum. By adjusting the chromium concentration and laser system design, the emission properties and efficiency of Cr:YAG crystals can be tailored to meet the demands of various laser applications. This versatility makes Cr:YAG suitable for medical, scientific, and industrial uses.
Key Applications of Cr:YAG Crystals
1. Medical Applications
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Dermatology:
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Skin Resurfacing: Used in fractional skin resurfacing to improve skin texture, reduce wrinkles, and minimize scars.
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Tattoo Removal: Effectively breaks down tattoo pigments for removal.
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Ophthalmology:
2. Scientific Research
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Spectroscopy: Provides a stable near-infrared laser source for analyzing chemical compounds, biological samples, and materials.
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Materials Science: Used to study and characterize material properties.
3. Industrial and Technical Uses
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Materials Processing: Ideal for precise marking and engraving on metals, ceramics, plastics, and other materials.
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Telecommunications: Occasionally used in specialized optical communication components.
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Environmental Sensing: Utilized in LIDAR systems for atmospheric monitoring, remote sensing, and topographic mapping.
Packaging of Cr:YAG Crystals
Cr:YAG crystals are carefully packaged to ensure their integrity and performance during storage and transportation. Typically, the crystals are placed in protective, anti-static containers or cushioned boxes to prevent mechanical damage and contamination. Packaging is customized based on crystal size and quantity, with additional protective layers used for larger or more delicate pieces. This meticulous packaging process guarantees that the crystals arrive in optimal condition, ready for immediate use in laser systems.
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Dopant Concentration
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Cr: 0.5~1.2 %
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Orientation
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<111> crystalline direction
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Flatness
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< λ/10 @ 632.8 nm
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Parallelism
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≤10"
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Perpendicularity
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≤5'
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Surface Quality
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10/5 (MIL-O-13830A)
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Optical Quality
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Interference fringes ≤ 0. 125 /inch Extinction ration Ø3~Ø6.35 ≥ 28Db, Ø7~Ø10 ≥ 25dB
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Size
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Rods: Ø (3~10)mm×(30~180)mm (L) Slabs: (3~12)mm×(6~24)mm×(60~180)mm (L) Upon requests of customers
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Dimensional Tolerances
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Diameter: +0/-0.05mm Length: ±0.5mm , Chamfer : <0.1 mm @ 45º
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AR-Coating Reflectivity
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R≤ 0.2% (@1064nm)
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HR-Coating Reflectivity
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R>99.8%@1064nm and T>95%@808nm
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Other HR Coatings
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Such as HR @ 1064/532 nm, HR @ 946nm, HR@1319 nm and other wavelengths are also available
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Damage Threshold
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> 500MW/cm2
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Notes:
1. To inquire or order a finished crystal, please provide the specifications as listed above. For most applications, we only need to know the following:
1) Nd-dopant concentration; 2) Sizes; 3) Surface quality; 4) Coating.
2. For special requests, please provide a detailed specification for evaluation and fabrication.
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