Optical-Grade Lithium Niobate Crystal Substrate

Optical-Grade Lithium Niobate Crystal Substrate

Optical-grade lithium niobate crystal substrate is a high-quality functional crystal material with excellent electro-optic, acousto-optic, piezoelectric, and nonlinear optical properties. It is widely used in optical communications, integrated photonics, surface acoustic wave devices, optoelectronic technology, and other fields. The product offers two material types: congruent lithium niobate (CLN) and stoichiometric lithium niobate (SLN), with good crystal quality, optical uniformity, and surface processing performance. It supports 3-inch, 4-inch, 6-inch, and 8-inch round wafers, as well as square, triangular, and custom special-shaped sizes. Processing options include single-side polishing, double-side polishing, and single-side polishing with the other side ground/lapped, meeting diverse needs for optical experiments, LNOI thin-film preparation, electro-optic modulation, and precision optoelectronic devices.

Product features：Excellent optoelectronic performance；High-quality crystal substrate；Flexible customization in multiple specifications；Precision surface processing

Part Number：MP-LN-SUB

Application area：Optical communications and electro-optic modulation | LNOI thin films and integrated photonics | Acousto-optic and RF acoustic devices | Nonlinear optics and scientific research experiments

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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 (reference specification for double-side polishing)

Dimension Drawing

General Parameters

Parameter	Specification
Material Type	Congruent Lithium Niobate (CLN), Stoichiometric Lithium Niobate (SLN)
Crystal Structure	Trigonal Crystal System
Crystal Orientation	X-cut, Y-cut, Z-cut, Y36°-cut, customizable
Wafer Diameter	3 inch (76.2 mm), 4 inch (100 mm), 6 inch (150 mm), 8 inch (200 mm)
Product Shape	Round, square, triangular, custom special-shaped
Wafer Thickness	350 μm, 500 μm, 1000 μm, customizable
Thickness Tolerance	Customized according to dimensions and processing requirements
Primary Orientation Flat (OF)	22 ± 2 mm, 32 ± 2 mm, 47 ± 2 mm (selected according to specification)
Secondary Orientation Flat (RF)	14 ± 3 mm (for applicable specifications)
Surface Processing	Single-Side Polished (SSP), Double-Side Polished (DSP), single-side polished with the other side lapped/ground
Surface Quality	S/D 20/10 (reference specification)
Surface Roughness (Ra)	≤ 0.3 nm (reference specification)
Total Thickness Variation (TTV)	≤ 10 μm (reference specification)
Warp (WARP)	≤ 3 μm (3-inch reference specification)
Ordinary Refractive Index (No)	2.2878±0.0001 (λ= 632.8nm)
Extraordinary Refractive Index (Ne)	2.2028±0.0001（λ=632.8nm）
Curie Temperature	Approx. 1142℃（CLN）
Edge Treatment	Chamfered edge, customizable
Internal Crystal Quality	No obvious striations, inclusions, or other defects
Main Applications	Optical communications, electro-optic modulation, LNOI thin-film substrates, acousto-optic devices, SAW devices, nonlinear optics, RF acoustic devices, optical experiments

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Product title: Optical-Grade Lithium Niobate Crystal Substrate

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