Highly Doped Crystal Nd:YAG Crystals

Highly Doped Crystal Nd:YAG Crystals Product Discription

High-doping-concentration Nd:YAG crystals (doping concentration ≥ 1.2 at.%) are solid-state laser crystal materials in which the pump absorption efficiency is concentrated within an extremely short crystal length by incorporating a higher concentration of neodymium ions into the YAG crystal. The high-doping-concentration Nd:YAG crystals manufactured by Asin Optics are primarily used in various solid-state laser systems, such as microchip lasers and compact lasers. We currently offer customization options for dimensions, doping concentration, crystal orientation, and coatings, and provide reliable solutions for laser systems.

Highly Doped Crystal Nd:YAG Crystals Product Features

1. We offer a variety of specifications, including 1.2 at.%, 1.5 at.%, and 2.0 at.%, with custom orders available up to 3.0 at.%.
2. We employ specialized processes to control crystal growth uniformity, ensuring that crystals maintain ultra-low scattering losses even at high concentrations.
3. We also offer diffusion bonding services for high-doping-concentration ND:YAG and undoped YAG end caps to minimize thermal effects.

Custom Capability Of High-doped Nd: YAG

Highly Doped Crystal Nd:YAG Crystals Applications

Nd:YAG Crystal for Passively Q-switched Microchip Lasers

Passively Q-switched microchip lasers require the simultaneous completion of pump absorption, gain accumulation, and Q-switch pulse generation within crystal lengths on the order of millimeters or even sub-millimeters. Conventional 1.0 at.% doped Nd:YAG requires several millimeters of thickness to absorb sufficient pump energy, resulting in excessively long cavity lengths, a large number of longitudinal modes, and difficulty in compressing the pulse width. By using high-doping-concentration Nd:YAG (1.5 at.%–3.0 at.%), more than 90% of the pump light can be absorbed within an extremely short path length.

Short Absorption Length Nd:YAG Laser

Space-constrained applications such as endoscopic laser therapy, implantable optical sensors, and airborne fuses require laser crystals to be extremely compact in length while maintaining sufficient single-pass gain. Conventional low-doped crystals, due to their low absorption coefficients, require longer distances to absorb pump light, which also increases their volume. High-doped Nd:YAG can shorten the absorption length of 808 nm pump light and free up space.

High Repetition Rate Diode-Pumped Solid-State Lasers (DPSSL)

High-repetition-rate DPSSLs require a delicate balance between a short upper-level lifetime and a high gain cross-section in the gain medium. Highly doped Nd:YAG can achieve high net gain within a short cavity, supporting rapid pulse rise and fall times to enable high-frequency operation.