Optical-Grade Lithium Tantalate Crystal

Optical-Grade Lithium Tantalate Crystal

Optical-grade lithium tantalate crystal is a multifunctional crystal material with excellent piezoelectric, pyroelectric, electro-optic, and nonlinear optical properties. The product has good thermal stability, a wide transmission range, and good photorefractive resistance. It can be processed into X-, Y-, Z-cut and special engineered crystal orientations according to application requirements, and periodically poled lithium tantalate can also be prepared. With its comprehensive optoelectronic properties, optical-grade lithium tantalate is suitable for surface acoustic wave devices, RF resonators, infrared detection, electro-optic modulation, nonlinear frequency conversion, terahertz technology, high-temperature piezoelectric sensing, and other fields.

Product features：Excellent piezoelectric and pyroelectric properties；Good optical performance；Good thermal stability and photorefractive resistance；Customizable crystal orientations and specifications

Part Number：MP-LT-SUB

Application area：RF and acoustic devices | Infrared detection and sensing | Electro-optic and nonlinear optics | Terahertz and special sensing

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Main parameters
General Parameters
Optional Configurations
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Main parameters

Core parameters

Standard thickness Surface quality

350 μm, 500 μm, 1000 μm, customizable S/D 20/10

Dimension Drawing

General Parameters

Parameter	Specification
Material Type	Optical-grade lithium tantalate (CLT)
Crystal Orientation	X, Z (other special orientations customizable)
Standard Diameter	76.2 mm、100 mm
Primary Orientation Flat (OF)	22 mm ± 2 mm、32 mm ± 2 mm
Secondary Reference Flat (RF)	14 mm ± 3 mm
Thickness	350 μm, 500 μm, 1000 μm, customizable
Surface Processing	Double-side polished
Surface Quality	S/D 20/10
Surface Roughness (Ra)	≤0.3 nm
Total Thickness Variation	≤10 μm
Warp	≤3 μm（3 inch）
Ordinary Refractive Index (No)	2.1768 ± 0.0001
Extraordinary Refractive Index (Ne)	2.1808 ± 0.0001
Refractive Index Test Method	Prism Coupler Method @ 633 nm
Edge Treatment	Chamfered round edge
Curie Temperature	610 ± 1 ℃
Internal Quality	No striations, inclusions, or other obvious internal defects
Transmission Band	Approx. 280 nm to 4.5 μm
Mohs Hardness	Approx. 5.5

Optional Configurations

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Product title: Optical-Grade Lithium Tantalate Crystal

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