Stoichiometric Lithium Niobate

The stoichiometric lithium niobate crystal exhibits unique advantages compared to the congruent LiNbO3. The precise control in the manufacturing process results in a more uniform crystal structure, with a higher Li+ molar ratio than congruent lithium niobate. This precise ratio reduces lattice defects, improves the symmetry of the crystal structure, enhancing the consistency and predictability of its optical rotation.

In terms of optical performance, stoichiometric lithium niobate demonstrates lower absorption coefficients, minimizing energy loss when light passes through the material and ensuring higher optical transmittance. This characteristic makes it particularly suitable for applications with stringent energy loss requirements, such as laser systems. Additionally, its uniform crystal structure and lower lattice defects reduce the effects of light quantum scattering, improving the clarity and stability of optical signals.

In the field of nonlinear optics, stoichiometric lithium niobate's superior and stable nonlinear optical properties make it excel in devices like optical parametric amplifiers and oscillators. Its higher second-order nonlinear coefficient enhances efficiency in generating second and third harmonic waves, suitable for frequency doubling and mixing applications.

Furthermore, stoichiometric lithium niobate exhibits enhanced resistance to depolarization, prolonging the crystal's lifespan and ensuring longer-term stability compared to congruent lithium niobate. Its superior thermal stability, achieved by meeting the theoretical chemical composition, makes it suitable for applications requiring high stability, such as high-power laser systems.

Stoichiometric Lithium Niobate Wafers are high-performance single crystal substrates manufactured with a precisely controlled lithium-to-niobium ratio, close to the theoretical chemical composition of LiNbO₃. Compared with conventional congruent lithium niobate, stoichiometric LN wafers exhibit a more uniform crystal structure, significantly reduced lattice defects, and improved structural symmetry. These advantages lead to superior optical consistency, higher reliability, and enhanced performance in advanced photonic and optoelectronic applications.

One of the key features of Stoichiometric Lithium Niobate Wafers is their higher Li⁺ molar ratio. This optimized composition minimizes intrinsic point defects such as lithium vacancies and niobium antisite defects, which are common in congruent LN. As a result, stoichiometric LN shows improved optical homogeneity and more predictable optical rotation behavior, making it ideal for precision optical systems where stability and repeatability are critical.

In terms of optical performance, stoichiometric lithium niobate demonstrates lower absorption coefficients across a wide spectral range. This ensures higher optical transmittance and reduced energy loss during light propagation. The reduced internal scattering and absorption make these wafers especially suitable for laser systems, optical communication devices, and high-sensitivity photonic components where even minor losses can significantly impact system efficiency.

Stoichiometric Lithium Niobate Wafers also exhibit superior nonlinear optical properties. Their enhanced second-order nonlinear coefficient greatly improves conversion efficiency in frequency doubling, frequency mixing, and optical parametric processes. This makes them widely used in nonlinear optical devices such as optical parametric oscillators (OPO), optical parametric amplifiers (OPA), second-harmonic generators (SHG), and third-harmonic generation systems. The uniform crystal structure further ensures stable phase matching and consistent nonlinear performance.

Another important advantage is the enhanced resistance to depolarization. Stoichiometric LN wafers maintain stable ferroelectric domain structures over long periods, even under strong electric fields or elevated temperatures. This property significantly extends the operational lifetime of devices and ensures long-term performance stability, which is essential for high-power laser systems and precision electro-optic components.

From a thermal perspective, Stoichiometric Lithium Niobate Wafers offer improved thermal stability compared to congruent LN. The near-ideal chemical composition reduces internal stress and thermal-induced defects, allowing the material to maintain optical and electrical performance under high-temperature or high-power operating conditions. This makes them highly suitable for demanding environments such as industrial lasers, aerospace photonics, and advanced scientific instruments.

CQT provides high-quality Stoichiometric Lithium Niobate Wafers with excellent surface quality, low defect density, and customizable specifications. Various wafer diameters, thicknesses, and crystal orientations such as X-cut, Y-cut, Z-cut, and special angles are available to meet different application needs.

With superior optical transmittance, strong nonlinear efficiency, enhanced thermal stability, and long-term polarization reliability, Stoichiometric Lithium Niobate Wafers represent a premium choice for high-end photonic devices, nonlinear optics, electro-optic modulation, and next-generation integrated optical systems.