Nd:YAG+Cr:YAG
Our Nd:YAG+Cr:YAG bonded crystal is formed by bonding Cr:YAG to one end of Nd:YAG, effectively improving the overall performance of Nd:YAG and Cr:YAG lasers. The thermal conductivity of Nd:YAG is 14W/m/K at 20ºC and 10.5W/m/K at 100ºC; that of Cr:YAG is 12.13W/m/K. Bonding both ends to form Nd:YAG+Cr:YAG improves the thermal behavior of Nd:YAG, reduces pump-induced thermal lensing, improves beam quality, raises the damage threshold, reduces thermal effects, increases efficiency and output stability, and extends laser service life. Molecules at the precision-machined optical surfaces interdiffuse and merge to form more stable chemical bonds, creating a true integrated bond that enables miniaturized, integrated laser devices while improving the thermal properties of laser rods. Crylink uses surface-activated bonding, a low- or room-temperature bonding technology characterized by surface cleaning and surface activation. Before bonding, bombardment of the bonding surfaces by fast atoms or ion beams can effectively increase bond strength and enable high-quality bonding among inorganic materials, metals, and semiconductors. Compared with high-temperature thermal bonding, surface-activated bonding provides higher interfacial bond strength and better control of optical absorption loss and surface-figure changes. In thermal diffusion bonding, impurities on the surfaces cannot be removed and become trapped at the bonding interface. Surface-activated bonding can remove polishing residues, organic contamination, and surface oxide layers, break chemical bonds in the material, and increase activation energy. The Nd:YAG+Cr:YAG bonded crystals have high bond strength, low absorption loss at the interface (generally less than 20ppm), and little surface-figure change at the interface (surface figure after bonding <lamda/8). Available shapes include rods, slabs, waveguides, and sandwich structures. Various coatings can be provided on both ends, including AR/AR@1064nm+808nm on both end faces or S1:HR@1064nm&AR@808nm, S2:PR@1064nm&HR@808nm. Nd:YAG+Cr:YAG bonded crystals are widely used in biophysics, medicine, military applications, machinery, scientific research, and construction.
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Overview
Specifications
| Parameter | Value |
|---|---|
| concentrations [Materials：Nd:YAG] | 0.6%\1.0%\1.1% |
| Initial Transmission [Materials：Cr:YAG] | 30～99% |
| Structure [Materials：Nd:YAG / Structure；Cr:YAG：Rods/Slabs/Sandwich/Waveguide/] | Rods/Slabs/Sandwich/Waveguide/ |
| Structure [Materials：Cr:YAG / Structure；Nd:YAG：Rods/Slabs/Sandwich/Waveguide/] | Rods/Slabs/Sandwich/Waveguide/ |
| End-face Configuration [Materials：Nd:YAG / End-face Configuration；Cr:YAG：Flat/Convex/Wedge] | Flat/Convex/Wedge |
| End-face Configuration [Materials：Cr:YAG / End-face Configuration；Nd:YAG：Flat/Convex/Wedge] | Flat/Convex/Wedge |
| Side Configuration [Materials：Nd:YAG / Side Configuration；Cr:YAG：Polish/Fine Ground] | Polish/Fine Ground |
| Side Configuration [Materials：Cr:YAG / Side Configuration；Nd:YAG：Polish/Fine Ground] | Polish/Fine Ground |
| Coating available [Materials：Nd:YAG / Coating available；Cr:YAG：AR@1064nm+808nm / @1064nm+808nm] | AR@1064nm+808nm |
| Coating available [Materials：Cr:YAG / Coating available；Nd:YAG：AR@1064nm+808nm / @1064nm+808nm] | AR@1064nm+808nm |
| Coating available [Materials：Nd:YAG / Coating available；Cr:YAG：PR@1064nm&HR@808nm / @1064nm&AR@808nm] | HR@1064nm&AR@808nm |
| Coating available [Materials：Cr:YAG / Coating available；Nd:YAG：HR@1064nm&AR@808nm / @1064nm&HR@808nm] | PR@1064nm&HR@808nm |
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