KTN Crystal (KTa₀.₅Nb₀.₅O₃) – <001> Orientation, 10 × 10 × 0.5 mm

Description

KTN (Potassium Tantalate Niobate, KTa₁₋ₓNbₓO₃) is a high-performance electro-optic and nonlinear optical single crystal. With x = 0.5, this crystal exhibits excellent dielectric tunability, high electro-optic coefficients, and strong photorefractive effects, making it ideal for tunable photonics devices, electro-optic modulators, and nonlinear optical applications.

This particular crystal is oriented along the <001> direction, providing maximum electro-optic response and superior uniformity. Its 10 × 10 × 0.5 mm size is suitable for experimental research, prototype devices, and photonics integration.

Key Features

• Single crystal KTN with composition KTa₀.₅Nb₀.₅O₃
• <001> crystallographic orientation for optimal electro-optic performance
• Size: 10 × 10 × 0.5 mm
• High electro-optic coefficient (r33 ≈ 30–50 pm/V)
• Strong photorefractive effect
• Excellent dielectric tunability
• Wide optical transparency (~350 nm – 5500 nm)
• Low defect density and high optical uniformity

Typical Applications

• High-speed electro-optic modulators (EOMs)
• Tunable photonic devices and optical delay lines
• Beam steering and scanning systems
• Nonlinear optical devices
• Photorefractive and adaptive optics research
• Phase modulation in telecom and laser systems
• High-speed optical switches

Technical Datasheet – KTN Crystal (KTa₀.₅Nb₀.₅O₃)

Chemical Formula	KTa₀.₅Nb₀.₅O₃
Crystal System	Perovskite, cubic/tetragonal
Orientation	<001>
Size	10 × 10 × 0.5 mm
Surface Quality	λ/8 – λ/10, 20/10 Scratch-Dig
Transparency Range	350 – 5500 nm
Electro-optic Coefficient (r33)	30 – 50 pm/V
Dielectric Constant (εr)	Tunable
Photorefractive Effect	Strong
Refractive Index	~2.3
Thermal Expansion	~10 × 10⁻⁶ K⁻¹
Growth Method	Top-Seeded Solution Growth
Applications	EOMs, tunable photonics, beam steering, nonlinear optics

 

Material Properties & Crystal Structure

• Chemical Formula: KTa₀.₅Nb₀.₅O₃
• Crystal System: Perovskite, cubic at high temperature, tetragonal/orthorhombic at room temperature depending on composition
• Space Group: Pm3m (high-temp cubic)
• Dielectric Constant (εr): tunable with electric field
• Electro-optic Coefficient (r33): 30–50 pm/V
• Photorefractive Effect: Strong
• Thermal Expansion Coefficient: ~10 × 10⁻⁶ K⁻¹
• Refractive Index: ~2.3 (varies with wavelength)
• Transparency Range: 350–5500 nm

Standard Product Dimensions

Orientation	Size (mm)	Thickness (mm)	Surface Finish
<001>	10 × 10	0.5	Polished λ/8–λ/10

Custom sizes and thicknesses available on request.

Customization Options

• Different crystal orientations (<001>, <110>, <111>)
• Custom sizes, thicknesses, and apertures
• Special polishing and surface quality (20/10 or 40/20 Scratch-Dig)
• AR coating or dielectric coating for specific wavelengths
• Edge chamfering and beveling
• Pre-mounted crystals for electro-optic devices

Packaging and Delivery

• Cleanroom-safe packaging
• Anti-static and moisture-resistant wrapping
• Vacuum-sealed if requested to prevent moisture absorption
• Standard lead time: 2–3 weeks for stock sizes, 4–6 weeks for custom

Why Choose Our KTN Crystals

• High-purity raw materials for low optical absorption
• Top-seeded solution growth ensures uniformity and low defect density
• Precision polishing for high-quality optical surfaces
• Reliable performance in electro-optic, nonlinear, and photorefractive applications
• Flexible customization and competitive pricing
• Trusted supplier for research institutions and photonics companies worldwide