High Quality Alexandrite Laser Rod
Alexandrite (Cr3+:BeAl2O4, chromium-doped beryllium aluminate) is a 4-stage energy laser material used in an adjustable wavelength of 700-820nm.
Alexandrite laser rods can handle high-energy, wide pulses and resist thermal shock.
The Alex rod is mainly used for applications such as dermatology, with great absorption into melanin at 755nm, making it the preferred gain material used for the hair removal industry.
Alexandrite crystal boules are grown per the Czochralski growth method.
The output energy of an Alex laser rod is the main critical parameter for every system designer, and that depends on the Cr uniformity along the rod.
The Alexandrite boules Arsuf Laser grows and supplies have a superb crystal structure and Cr concentration uniformity, resulting in output energy 30-80% higher than similar rods in the market.
Arsuf Lasers’ advantages:
- Growing the alexandrite crystal to your needs
- Higher efficiency
- Hard coating
- Engineering support
- Free failure analysis
- Competitive and stable pricing
- Flexible delivery
Alexandrite Laser Rod — Technical Specification
Purpose: Gain medium for Alexandrite laser system (emission wavelength ~755 nm). Suitable for pulsed (Q-switched) and CW operation.
1. Material & Dopant
- Material: Alexandrite optical grade.
- Dopant Ion: Cr³⁺ (Chromium)
- Dopant Concentration: 0.13%
2. Dimensions
- Shape: Cylindrical rod, endfaces flat and parallel.
- Diameter: 1-10 mm (±0.02 mm)
- Length: 10–160 mm (±0.5 mm)
- Edge Bevel: 0.75-0.125 mm x 45°
- Edge Finish: Fine grid (400 Mesh)
- Edge Chips: 0.125 mm max (not to exceed bevel diameter)
- Barrel Finish: Ra = 1.6 ±0.02 µm
- Clear Aperture: > 95%
3. End Surface Finish
- Type: Flat/Flat or Flat/Radius (e.g., 1 meter)
- Parallelism of End Faces: ≤ 5 arc sec
- Scratch-Dig: 10-5 (Side 1 & 2)
- Flatness: λ/10 @ 632.8 nm
- Perpendicularity: ≤ 5 arc minutes
- Wavefront Error: ≤ λ/16 per inch @ 632.8 nm
- Quality Standard: Per MIL-PRF-13830
4. End-Face Coatings & LDT
- Coatings: Optional AR, HR, or PR @ 755 nm.
- Angle of Incidence (AOI): 0° (Normal)
- Coating Examples:
- AR @ 755 nm: R ≤ 0.2% per surface
- HR @ 755 nm: R ≥ 99.8%
- PR @ 755 nm: R = 80-95% ±1% (Typical)
- Coating Type: IBS, IAD e-beam.
- Laser Damage Threshold (LDT): ≥ 25-40 J/cm² @ 755 nm (10 ns pulse)
- Documentation: Coating test data and measured reflectivity/absorption curves provided with delivery.
5. Traceability, Packaging & Warranty
- Traceability: Each rod is serialized. Includes QC dimensional report (parallelism, perpendicularity, etc.) and coating test reports.
- Packaging: Vibration-damped boxes.
- Lead Time: 12 weeks (Typical)
- Warranty: 12 months against manufacturing defects.
More information about Alexandrite Rods
What is an Alexandrite laser crystal?
An Alexandrite laser crystal is a type of laser crystal made from the mineral chrysoberyl.
It is known for its ability to produce high-power, visible-light laser beams at a wavelength of 755 nanometers, which falls in the red part of the visible spectrum. Read the full article…
Applications of Alexandrite laser crystal
Alexandrite lasers are commonly used in a variety of medical and cosmetic applications, such as hair removal, tattoo removal, and skin resurfacing.
Due to its high power, stability, and reliability, the Alexandrite laser is considered one of the gold standards for laser hair removal.
Frequently Asked Questions
According to the technical specification, a detailed report is supplied to the customer.
No, as all crystals are processed on the same line, the main difference lies in the LIDT requirements (Laser Induced Damage Threshold) determined by the rod's energy density.
Replacement depends on usage, maintenance, and industry, similar to car mileage.
Arsuf is capable of selecting diverse manufacturing and coating processes to maximize crystal quality, efficiency, maximal energy output, above-average lifetime, and high damage threshold. The entire process is performed in-house, leveraging multiple supplier capabilities to ensure the highest customer satisfaction—free from the constraints of a single-supplier approach.
Product warranty is provided by Arsuf, enabling selection from multiple manufacturing and coating technologies for the best outcome.
Commitment to Quality Excellence
At Arsuf Lasers, we are proud to uphold the highest standards in quality management, as demonstrated by our ISO 9001 certification. This certification reflects our ongoing commitment to excellence, ensuring that every process we implement meets rigorous international standards. Our dedication to quality allows us to consistently deliver precise, reliable, and innovative laser solutions that meet the evolving needs of our clients.
Click the certificate image below to view our ISO 9001 certificate.
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What are Alexandrite Rods?
An Alexandrite rod is a solid-state chromium-doped laser useful in dermatology and other medical applications. You’ll find alexandrite gemstones in nature. But for medical uses
Manufacturing laser rods to the medical and cosmetics market (video)
Video transcript Hello everybody My name is Avi Schiff and i am the technical director at arsuf lasers. In this video I would like to
