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Large-Aperture YAG Crystals
High-Power Laser Systems
>120x120
Slab Dimensions (mm)
top grade crystals enabling unprecedented active aperture.
99.996%
Material Purity
controlled dopant distribution
5-7×
Larger Active Medium
than conventional laser-grade YAG formats
Designed for system integrators building kW-class modules and scalable high-power laser architectures.
Applications
Designed for systems where performance, stability, and scaling are critical.
Directed Energy Systems
High-power continuous-wave and beam-combined architectures
Industrial Laser Systems
Disk lasers, DPSSL pumping, high-power processing
Fusion & High-Energy
Laser driver development and scaling experiments
higher power per aperture
Reduce module count
Simplify thermal design
Supported Materials
Large size YAG variants
Yb:YAG: high-average-power and disk laser systems
Nd:YAG: Pulsed and CW operation
Tm:YAG: 2 µm wavelength systems
Er:YAG: Mid-IR applications
Undoped YAG: optical windows, and passive components
Customization
Dopant concentration, Geometry, Surface preparation
Available for
Evaluation samples
System integration testing
Manufacturing
Controlled Process. Repeatable Output. Scalable Production.
Process Control
  • Proprietary HDC (Horizontal Directional Crystallization) method
  • Controlled atmosphere — contamination-free environment
Repeatability
  • Batch-to-batch consistency in purity and geometry
  • Dopant uniformity validated per production run
  • Dimensional tolerances held across crystal sizes
Production Capacity
  • Custom dimensions and dopant profiles tailored to customer requirements
  • Repeatable manufacturing process for pilot and commercial production
Quality Assurance
  • Optical characterization per crystal
  • Third-party validation available on request
  • Documentation package for system integration
System Impact
Replace Complexity with Architecture Efficiency
Impact depends on optical design, cooling approach, and system architecture.
✓ AT Crystals Approach
  • Single large-aperture crystal per module
  • Fewer modules for equivalent or higher output
  • Simplified optical path — reduced alignment overhead
  • 5-7× larger cooling area — passive thermal advantage
  • Fewer components = fewer failure modes
  • Architecture scales to higher power without redesign
❌ Conventional Approach
  • Multiple small crystals per module
  • High module count to reach target power
  • Complex beam combining and alignment
  • Active cooling arrays required per element
  • More failure points, higher maintenance burden
  • Aperture-limited — cannot scale beyond current power levels
System-Level Impact
Module Count
Large-aperture crystals directly reduce the number of gain elements required — cutting BOM cost and integration time.
Thermal Architecture
5-7× cooling area per element reduces reliance on active thermal management — simplifying system design.
Scalability
Same crystal architecture supports higher power targets — no redesign required as output requirements grow.
Replace multi-module architectures with a simpler, scalable approach.
Why AT Crystals
Built for Industrial-Scale Deployment
Scale
  • Largest commercially available YAG
  • Dimensions up to 140 × 140 × 20 mm
  • 5-7x larger cooling area than conventional disc laser crystals
Performance
  • 99.996% purity — consistent across production batches
  • Controlled dopant distribution — uniform optical properties
  • Geometry optimized for disc laser and high-power formats
Manufacturing
  • Scalable manufacturing approach (HDC)
  • Designed for repeatability, cost efficiency, and shorter lead times compared to conventional methods.
Integration Readiness
  • Samples available for system-level evaluation
  • Custom dimensions and dopant profiles on request
  • Active pilot programs with system integrators
About us
The Company
AT Crystals develops and manufactures large-aperture laser-grade materials for high-power solid-state laser systems. We focus on scaling gain media beyond conventional size limits, enabling simpler and higher-power laser architectures.
Contact
AT Crystals, s.r.o.
Rosinská cesta 9
010 08 Žilina
Slovak Republic
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