| Brand Name: | ZMSH |
| MOQ: | 10 |
| Payment Terms: | T/T |
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.
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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
| 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 |
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
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.
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