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YAG crystal optics
The author :    time : 2020-02-24     Click on the number of times : 289
YAG Crystal (Y3AI5O12)
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 Laser Optex.Main Features: 1) Transmission in 0.25-5.0 m m, no absorption in 2-3 m m. 2) Extremely hard and durable. 3) High thermal conductivity. 4) High bulk damage threshold. 5) High index of refraction and Non-birefringence.
Basic Properties:
Crystal structureCubic
Density4.5g/cm 3
Transmission Range250-5000nm
Melting Point1970°C
Specific Heat0.59 W.s/g/K
Thermal Conductivity14 W/m/K
Thermal Shock Resistance790 W/m
Thermal Expansion6.9x10 -6 /K
dn/dt, @633nm7.3x10 -6 /K -1
Mohs Hardness8.5
Refractive Index1.8245 @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°
Flatnessbetter than l /8@633nm
Parallelismbetter than 5''
Perpendicularitybetter than 3'
Scratch-Dig10-5 per MIL-O-1383A
Wavefront Distortionbetter than l /2 per inch@1064nm
YAG substrate
Undoped YAG is a substrate material that can be used for UV and IR optics. Sapphire has been the substrate of choice for these applications; however it is difficult to polish Sapphire to a 10-5 scratch-dig finish,and is also slightly birefringent. YAG is non-birefringent and can be polished to a 10-5 scratch surface quality. Advantages Due to the high strength of YAG, thin windows can be fabricated    without warping, allowing them to be used at wavelengths near the  UV and IR cutoffs The high index of refraction reduces spherical aberrations in    lenses by 25% over a typical glass lens Applications Used for UV and IR optics Especially useful for applications in the 2-3 um region where there is no absorption, this is where glasses are highly absorbent due to the strong H2O band.Also It is good substrate for both HTS film and III-V nitrides.
Standard YAG substrate in stock
Part No.DimensionPriceDelivery time
YAG100101YAG (100) 10x10x0.5mm, 1spUSD70in stock
YAG100102YAG (100) 10x10x0.5mm, 2spUSD80in stock
YAG100103YAG (100) 10x10x1.0mm, 1spUSD90in stock
YAG100104YAG (111) 10x10x0.5mm, 1spUSD70in stock
YAG100105YAG (111) 10x10x0.5mm, 2spUSD80in stock
YAG100106YAG (110) 10x10x0.5mm, 1spUSD70in stock
YAG100107YAG (110) 10x10x0.5mm, 2spUSD90in stock
YAG100108YAG (100) 2"x0.5mm, 1spUSD499in stock
YAG100109YAG (111) 2"x0.5mm, 1spUSD399in stock


Reproduced please specify:Laser Optex Inc. » YAG crystal optics

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