Diffusion-Bonded Crystals

Diffusion-bonded composites join doped gain sections to undoped end caps or other crystal sections. Configurations include vanadates, YAG microchips and nonlinear-crystal assemblies, each addressing thermal loading, integration or walk-off.

Properties, applications and specifications

Diffusion Bonded Crystals (DBC) are crystals consisting of two, three or more parts with different doping levels or different doping, usually one laser crystal and one or two undoped crystals combined by optical contact and further bonded under high temperature. The reference describes special diffusion bonding technology, which enables the joining of crystal materials without the use of an adhesive or an organic or inorganic bonding aid. This innovative technology reduces thermal lens effect of laser crystals, provides integral components to make compact lasers. Reference configurations include diffusion bonding crystals: 1. YVO4 diffusion bonding crystals Based diffusion bonding technology YVO4 or GdVO4 components are extremely useful for higher power in YVO4-based laser systems. Undoped end-caps increase damage threshold by separating the pump input face with the lasing doped portion.

2.YAG diffusion bonding crystals Based diffusion bonding technology microchips, especially in the form of Nd:YAG/Cr4+:YAG passively q-switched microchips have found a host of applications due to their compact size and the incorporation of both the lasing material and q-switch into a monolithic element. This approach minimizes system complexity and system size, and maximizes efficiency.

3. KTP and KTA diffusion bonding crystals

Bonded KTP and KTA assemblies can compensate nonlinear-crystal walk-off. Uniaxial or biaxial crystal sections may be combined into a walk-off-corrected composite, with geometry selected for the complete optical design.

4. BBO with Z cut to increase the length to reduce half voltage in E-O Q-switch device.

Specification of DBC crystal

Standard Products