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Nd:YAG

Nd:YAG, i.e., Neodymium‑doped Yttrium Aluminum Garnet, is one of the most widely used solid‑state laser gain media today, thanks to its excellent compatibility with a variety of laser operating modes including continuous wave (CW), pulsed, Q‑switched, mode‑locked, and frequency‑doubled operation.

Technical Specifications
Custom specifications available upon request

 Product Features

As an innovation leader in the field of optoelectronic materials, Fuzhou Jingzhi Optoelectronics Technology Co., Ltd. leverages the industrial advantages of its presence in the New Quality Productivity Center of Fuzhou High‑Tech Zone, backed by a top‑tier R&D team, to develop a series of high‑performance Nd:YAG (Neodymium‑doped Yttrium Aluminum Garnet)​crystals.With “high stability, wide power adaptability, and customized compatibility”​ as its core competitiveness, our products have become the preferred solution for industrial laser systems, medical devices, and scientific research instruments.

Basic Characteristics

Physical Property
Value
Remarks
Crystal Structure
Cubic crystal system
/
Lattice Parameters
a = b = c ≈ 12.008 Å, α = β = γ= 90°
/
Density
4.5 g/cm³
Room temperature
Refractive Index (1064 nm)
n ≈ 1.823
Room temperature
Mohs Hardness
8.5
/
Thermal Conductivity
14.0 W/(m·K)
Room temperature
Melting Point
1970 °C
/
Thermal Expansion Coefficient
7.8×10⁻⁶ K⁻¹
0–250 °C
Absorption Bandwidth (Pump Wavelength)
808 nm band: ~18 nm (FWHM); 885 nm band: ~25 nm (FWHM)
/
 

Nd:YAG Crystal Dimension & Quality Specifications

Item
Specification
Doping Concentration
0.3–1.0 (±0.1) at.%
Maximum Length
Diameter: 1–40 mm, Length: 0.3–200 mm, custom sizes available per customer request
Dimensional Tolerance
Diameter tolerance: ±0.05 mm, custom available; Length tolerance: ±0.1 mm, custom available
Surface Finish
10/5 (per MIL-PRF-13830B standard)
Flatness
≤λ/8 @ 633 nm
Transmitted Wavefront Distortion
≤λ/8 @ 633 nm
Parallelism
20 arcsec
Perpendicularity
≤15 arcmin
Chamfer
≤0.2 mm × 45°
Edge Chipping
≤0.1 mm
Coating
Custom coating design service available
Quality Guarantee Period
1 year (under normal use)
 

Application Fields

ndustrial Processing: Efficient and Precise Core Light Source​

Laser Marking: Primarily using 1064 nm infrared laser, it enables high‑contrast marking on metals (stainless steel, aluminum alloy), ceramics, plastics, and other materials.
Cutting and Welding: High‑power CW Nd:YAG lasers (hundreds of watts to several kilowatts) are suitable for metal sheet cutting, featuring small heat‑affected zones and smooth kerfs. Commonly used for automotive body parts and aerospace component manufacturing. In pulsed mode, they enable precision welding of thin metal foils (e.g., lithium‑battery tabs), producing small, high‑strength weld spots.
Micromachining: Coupled with optical focusing systems, 532 nm or 355 nm (third harmonic) lasers can perform micro‑drilling of PCB holes (diameter ≤ 0.1 mm), semiconductor wafer dicing, and other micro‑operations, meeting the miniaturization and high‑precision demands of the electronics industry.

Medical Field: Precise and Safe Therapeutic Tool​

Surgical Treatment: The 1064 nm laser has strong penetration and can be used for treating skin hemangiomas and pigmented lesions. Photothermal action destroys diseased tissue while minimizing damage to surrounding healthy skin. In urology, it is used for laser ablation of benign prostatic hyperplasia, reducing intraoperative bleeding.
Ophthalmic Surgery: The 532 nm green laser offers concentrated energy and selective absorption by ocular tissues, making it a common light source for glaucoma treatment (laser trabeculoplasty) and retinal lesion therapy (photocoagulation), enabling precise targeting of lesions and lowering postoperative complication risks.
Dental Applications: Low‑power Nd:YAG lasers can treat gingival inflammation and tooth hypersensitivity. Photobiomodulation reduces inflammatory response or occludes dentinal tubules to alleviate sensitivity.

Scientific Research and Measurement: Versatile Experimental Support​

Precision Measurement: Pulsed Nd:YAG lasers are used in laser ranging (e.g., industrial rangefinders, topographic mapping). Distance is calculated by measuring round‑trip time, achieving millimeter‑level accuracy. Frequency‑doubled deep‑UV laser (266 nm) can be employed for surface composition analysis of materials, such as detecting trace impurities on semiconductor chip surfaces.

Defense and Security: High‑Reliability Technical Assurance​

Laser Ranging and Guidance: High‑power pulsed Nd:YAG lasers serve as light sources for military rangefinders, enabling rapid distance measurement of distant targets (e.g., ships, aircraft). In missile guidance, laser illumination of the target directs missiles to accurate impact.
Security Inspection: Portable Nd:YAG laser spectrometers can detect hazardous substances via Laser‑Induced Breakdown Spectroscopy (LIBS), rapidly identifying elemental composition of explosives, narcotics, etc., suitable for security screening in airports, railway stations, and other public places.
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