Products

PRODUCT LIST

YAG

Undoped YAG Crystal

Undoped YAG Crystal is an excellent material for UV-IR optical windows, particularly for high

temperature and high energy density online_orderings, 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 from DeLn Optics.

Transmission in 0.25-5.0 um, no absorption in 2-3 um.
Extremely hard and durable.
High thermal conductivity.
High bulk damage threshold.
High index of refraction and Non-birefringence.

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 @0.8 m m, 1.8197 @1.0 m m, 1.8121 @1.4 m m

Main Specifications of YAG Windows and Mirrors:

Orientation [111] within 5°

Diameter +/-0.1mm

Thickness +/-0.2mm

Flatness better than l /8@633nm

Parallelism better than 30''

Perpendicularity better than 5'

Scratch-Dig 10-5 per MIL-O-1383A

Wavefront Distortion better than l /2 per inch at 1064nm

ORDER