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Undoped YAG


Orientation                    [111] within 5°

Density                          4.5g/cm3

Transmission Range         250-5000 nm

Melting Point                 1970°C

Flatness                        λ/8@633nm

Parallelism                    ≤ 30"

Perpendicularity             ≤ 5 ′

Scratch-Dig                   10-5

Undoped YAG Crystal is an excellent material for UV-IR optical windows, particularly for high temperature and high energy density application. The mechanical and chemical stability is comparable to sapphire crystal, but YAG is unique with non-birefringence and available with higher optical homogeneity and surface quality. Up to 3" YAG boule grown by CZ method, as-cut blocks, windows and mirrors are available.

Advantages of Undoped YAG:

•  High thermal conductivity, 10 times better than glasses
•  Extremely hard and durable
•  Non-birefringence
•  Stable mechanical and chemical properties
•  High bulk damage threshold
•  High index of refraction, facilitating low aberration lens design

 Features:

•  Transmission in 0.25-5.0 mm, no absorption in 2-3 mm

•  High thermal conductivity

•  High index of refraction and Non-birefringence

Basic Properties

Product Name

Undoped YAG

Crystal structure

Cubic

Density

4.5g/cm3

Transmission Range

250-5000nm

Melting Point

1970°C

Specific Heat

0.59 W.s/g/K

Thermal Conductivity

14 W/m/K

Thermal Shock Resistance

790 W/m

Thermal Expansion

6.9x10-6/K

dn/dt, @633nm

7.3x10-6/K-1

Mohs Hardness

8.5

Refractive Index

1.8245 @0.8mm, 1.8197 @1.0mm, 1.8121 @1.4mm

Technical Parameters

Orientation

[111] within 5°

Diameter

+/-0.1mm

Thickness

+/-0.2mm

Flatness

 l/8@633nm

Parallelism

≤ 30"

Perpendicularity

≤ 5 ′

Scratch-Dig

10-5 per MIL-O-1383A

Wavefront Distortion

better than l/2 per inch@1064nm

Customized

You can customise this product to your needs. If you do not find suitable specifications for your application please contact us for custom solution.