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Pure (Undoped) YAG Windows

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  • Excellent Mid-Wave IR (MWIR) (4 - 5µm) Transmission
  • Available in 5, 10, 12.5, and 25mm Diameters
  • Commonly Used in White Light Generation

Pure (Undoped) YAG Windows feature a durable pure Yttrium Aluminum Garnet (YAG) substrate that offers good transmission from 210 – 5500nm in the UV to MWIR spectra. Their high thermal conductivity and excellent optical properties make them suitable for use as protective windows in higher-energy laser systems. These windows produce broadband white light when pumped with an ultrafast laser, allowing for use in femtosecond white light (continuum) generation. Featuring excellent durability and high optical transparency, these windows facilitate precise laser delivery and measurement in medical and industrial laser systems. Pure (Undoped) YAG Windows, unlike sapphire, do not experience transmission dips in the MWIR, making them ideal for use with MWIR illumination sources and Quantum Cascade Laser (QCL) applications.

Common Specifications

Bevel:
Protective as needed
Clear Aperture (%):
90
Thickness (mm):
1.00 ±0.1
Edges:
Fine Ground
Knoop Hardness (kg/mm2):
1215
Parallelism (arcmin):
<3
Poisson's Ratio:
0.28
Young's Modulus (GPa):
300
Abbe Number (vd):
56
Axis Orientation:
<100>
Coating:
Uncoated
Index of Refraction (nd):
1.81
Substrate:
Yttrium Aluminium Garnet (YAG)
Surface Quality:
40-20
Wavelength Range (nm):
210 - 5500
Coefficient of Thermal Expansion CTE (10-6/°C):
8.2
Density (g/cm3):
4.56

Products

Dia. (mm)  Thickness (mm)   Compare   Stock Number   Price  Buy
5.00 1.00 #19-541 New £159.34 Qty 11+ £143.58   Request Quote  
  • 3-4 days
    ×
 
10.00 1.00 #19-542 New £182.10 Qty 11+ £163.72   Request Quote  
  • 3-4 days
    ×
 
12.50 1.00 #19-543 New £227.63 Qty 11+ £204.87   Request Quote  
  • 3-4 days
    ×
 
25.00 1.00 #19-545 New £295.92 Qty 11+ £266.15   Request Quote  
  • 3-4 days
    ×
 

Product Details

These windows are ideal for applications requiring a YAG crystal window with high thermal conductivity, mechanical strength, and excellent optical transmission in the 210 – 5500nm range. As an isotropic, chemically stable material, undoped YAG offers minimal birefringence, making it an excellent choice for high-power laser systems, harsh environmental conditions, and UV to IR optical setups. Each YAG crystal window is precision polished to tight surface tolerances for reliable integration into research, industrial, and defense-grade systems.

Technical Information

Special Handling

These optics require special handling to avoid damage and ensure long-term performance. Proper handling, cleaning, and storage are essential to maintain optical quality. Explore our Optics Cleaning Resources for step-by-step guides and best practices. For personalized assistance, Email us or Chat with our technical support team.

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