Synthetic Ruby Laser Rods (Cr:Al₂O₃) for Laser Equipment Length up to 200 mm
Synthetic Ruby Laser Rods (Cr:Al₂O₃) for Laser Equipment Length up to 200 mm
Product Overview:
Our synthetic ruby laser rods are grown using the Verneuil (Flame Fusion) method, a mature and widely adopted crystal growth process for laser-grade ruby. This method enables good crystal homogeneity, controlled chromium (Cr³⁺) dopant distribution, and reliable optical performance suitable for commercial and industrial laser applications.
Verneuil-grown ruby crystals exhibit high transparency, stable fluorescence behavior, and consistent laser output, making them a proven gain medium for pulsed ruby laser systems. Due to chromium doping and internal stress characteristics, the achievable crystal size is more limited than undoped sapphire; however, ruby rods with lengths up to 200 mm can be supplied depending on diameter and specification.
All ruby laser rods are fabricated with strict control of end-face flatness, parallelism, and perpendicularity to meet laser-grade optical requirements. Custom machining, polishing, and tolerances are available upon request.
Product Features
-
Laser-Grade Synthetic Ruby
Single-crystal Cr:Al₂O₃ grown by the Verneuil (Flame Fusion) method -
Reliable Optical Quality
Uniform chromium distribution and controlled defect levels for stable laser behavior -
Stable Laser Emission
Optimized for ruby laser emission at 694.3 nm (R₁ line) -
High Mechanical Hardness
Mohs hardness 9 with excellent wear and abrasion resistance -
Thermal & Chemical Stability
Suitable for pulsed laser operation and demanding environments -
Precision Fabrication
Optical-grade end faces with controlled flatness and parallelism -
Custom Dimensions Available
Diameter, length, orientation, and surface finish per customer drawing
Technical Specifications
| Property | Specification | Notes |
|---|---|---|
| Material | Synthetic Ruby (Cr:Al₂O₃) | Verneuil-grown |
| Dopant Concentration | 0.03% – 0.05% Cr₂O₃ | By weight |
| Crystal Structure | Trigonal (α-Al₂O₃) | R3c |
| Growth Method | Verneuil (Flame Fusion) | Single crystal |
| Laser Wavelength | 694.3 nm (R₁ line) | Ruby laser emission |
| Color | Pink to deep red | Chromium dependent |
| Diameter Range | 2 – 50 mm | Typical |
| Length Range | Up to 200 mm | Diameter dependent |
| Density | 3.98 g/cm³ | — |
| Hardness | Mohs 9 | Extremely hard |
| Refractive Index | ~1.763 @ 694 nm | Ordinary ray |
| Fluorescence Lifetime | ~3 ms | At 300 K |
| End Face Flatness | ≤ λ/4 | Laser-grade |
| End Face Parallelism | ≤ 10 arc seconds | Typical |
| Surface Finish | Fine polished / Optical polished | Optional |
| Recommended Max Temp | ≤ 200 °C | Avoid thermal shock |
Applications
-
Ruby Laser Equipment
Active gain medium for pulsed ruby lasers -
Holography
Coherent red light sources -
Medical Lasers
Tattoo removal, dermatology, pigmented lesion treatment -
Scientific Research
Laser–matter interaction and spectroscopy studies -
Laser Rangefinding & LIDAR
High-energy pulsed laser sources -
Precision Ruby Components
Watch bearings, wear-resistant ruby parts, waterjet nozzle orifices
FAQ – Frequently Asked Questions
Q1: What crystal growth method is used for these ruby rods?
A: The ruby rods are grown using the Verneuil (Flame Fusion) method, which is the most widely used and proven technique for laser-grade synthetic ruby.
Q2: What is the maximum available length?
A: Ruby rods with lengths up to 200 mm can be supplied, depending on diameter and application requirements.
Q3: Why is Verneuil-grown ruby commonly used for laser rods?
A: The Verneuil method offers stable optical performance, acceptable defect control, and cost efficiency, making it well suited for commercial and industrial ruby laser systems.
Q4: Can custom dimensions and tolerances be provided?
A: Yes. Custom diameter, length, polishing grade, orientation, and optical tolerances can be provided based on drawings or specifications.
Q5: How should ruby laser rods be stored and handled?
A: Store in a clean, dry, light-protected environment. Avoid fingerprints, mechanical shock, and rapid thermal cycling above 200 °C.
Storage & Handling Recommendations
-
Store in clean, dry, light-protected packaging
-
Clean using methanol or other non-abrasive solvents
-
Avoid mechanical shock and excessive clamping force
-
Use compliant thermal interface materials during mounting
Related Product
Customized Ruby Laser Rods Al₂O₃:Cr³⁺ Diameter 2mm/4mm Length 10mm/20mm
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.


