Undoped YAG is a substrate and window crystal that can be used for both UV and IR optic. It is particularly useful for high temperature and high energy applications. The mechanical stability of YAG is simllar to Sappghire, but YAG is not birefringent  and is available with high optical homogeneity, 

Advantages of Undoped YAG Crystals

● Non-birefringent

● High bulk damage threshold

● High index of refraction,facilitating low aberration lens design

● High thermal conductivity

● Stable mechanical and chemical properties

● Low stress and high optical quality

We produce a wide variety of finished laser product,as well as supplying YAG material.

Our general YAG production capabilities include:

● Rod sizes from 2mm to 15mm in diameter and from 3mm to 200mm in length

● Polished and AR coated

Typical finished part specifications and tolerances are listed below.

Material....YAG

Diameter Tolerance......+0,-0.025mm

Length Tolerance........+/-0.5mm

Parallelism........<10 arc seconds

Perpendicularity........<5 arc minutes

Chamfer.........0.13±0.08mm at 45°

Barrel Finish.......50-80 micro-inch(RMS)

Wavefront Distortion

Rod..........<λ/8 per inch @632.8nm

Extinction Ratio.......>30Db

Surface Flatness.......<λ/10 @632.8nm

Surface Quality..........10/5

Clear Aperture........>95%

Anti-Reflection Coating.......R<0.15%@1064nm per surface

High-Reflection Coating........Standard HR coating with R>99.8%@1064nm and R<5%@808nm