YAG Diffusion Bonded Crystals Product Discription
YAG bonded crystals are produced using thermal diffusion bonding technology to create a molecular-level, adhesive-free, monolithic bond between two or more YAG crystal materials with different optical properties. We dop the end faces of the laser crystals with ions such as Nd³⁺, Yb³⁺, Tm³⁺, and Ho³⁺, and bond an undoped YAG crystal segment to the end as a cap. We offer custom bonded configurations such as YAG+Nd, YAG+Nd+YAG, Nd+Cr⁴⁺, and YAG+Nd+Cr⁴⁺, tailored to meet the specific design requirements of our customers’ lasers. YAG bonded crystals are suitable for applications including diode-pumped solid-state lasers, passively Q-switched lasers, microchip lasers, industrial laser processing, medical and aesthetic lasers, ranging, scientific research, and high-stability laser systems.
Why Choose Us For Your YAG Composite Crystals
- By bonding a pure YAG end cap, we can directly channel the thermal lensing effect and end-face deformation caused by the pump light into the undoped region, thereby reducing thermal distortion
- By optimizing the crystal structure, we can increase the overall laser damage threshold of the crystal.
- We employ Thermal Diffusion Bonding (TDB), a molecular-level fusion process that uses no optical adhesives. This high-quality bonding interface prevents issues such as high absorption losses and delamination at high power levels.
- We offer flexible, customized bonding configurations based on customer designs, including single-end bonding, double-end bonding, and multi-layer gradient-doped bonding. Additionally, we provide customization options for crystal length, end-cap length, end-face structure, coating schemes, and overall dimensions to meet the design requirements of various pumping methods and laser output power levels.
Custom Capability Of YAG Diffusion Bonded Crystals
YAG Diffusion Bonded Crystals Applications
High-Power Nanosecond Lasers
In uniformly doped Nd:YAG crystal rods, the end faces heat up under high pump power, causing a thermal lensing effect. In laser oscillators or power amplifiers, one or both end faces of the doped Nd:YAG crystal are integrated with undoped pure YAG end caps via diffusion bonding. The pump light enters the doped region through the end caps, and the generated heat is dissipated outward by the pure YAG end caps, thereby mitigating the thermal lensing effect and increasing the laser damage threshold of the end faces.
Ultrafast Lasers
Femtosecond and picosecond pulses are highly sensitive to thermally induced changes in optical path length within the gain medium. In mode-locked oscillators, using crystals bonded at both ends with pure YAG end caps as the gain medium can effectively suppress pulse noise caused by thermal distortion, resulting in higher production consistency.
Laser Ranging and LiDAR
Laser ranging and LiDAR require lasers to deliver high-quality beams in environments with high vibration, large temperature fluctuations, and strong shocks, thereby enabling precise distance measurement. Using bonded crystals with high doping concentrations allows heat to be dissipated via the end-cap structure, resulting in superior beam quality and stability.
