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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 apertureReduce module countSimplify 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

sales@atcrystals.com

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