Nd: YAG — Excellent Solid Laser Material
Product Description
Nd: YAG is still the solid-state laser material with the best comprehensive performance. Nd:YAG lasers are optically pumped using a flashtube or laser diodes.
These are one of the most common types of laser, and are used for many different applications. Nd:YAG lasers typically emit light with a wavelength of 1064nm, in the infrared. Nd:YAG lasers operate in both pulsed and continuous mode. Pulsed Nd:YAG lasers are typically operated in the so-called Q-switching mode: An optical switch is inserted in the laser cavity waiting for a maximum population inversion in the neodymium ions before it opens.
Then the light wave can run through the cavity, depopulating the excited laser medium at maximum population inversion. In this Q-switched mode, output powers of 250 megawatts and pulse durations of 10 to 25 nanoseconds have been achieved.[4] The high-intensity pulses may be efficiently frequency doubled to generate laser light at 532 nm, or higher harmonics at 355, 266 and 213 nm.
The Nd: YAG laser rod produced by our company has the characteristics of high gain, low laser threshold, good thermal conductivity and thermal shock. It is suitable for a variety of working modes (continuous, pulse, Q-switch and mode locking).
It is commonly used in near-far-infrared solid-state lasers, frequency doubling and frequency tripling applications, It is widely used in scientific research, medical treatment, industry and other fields.
Basic Properties
| Product name | Nd:YAG |
| Chemical Formula | Y3Al5O12 |
| Crystal structure | Cubic |
| Lattice constant | 12.01Å |
| Melting point | 1970°C |
| orientation | [111] or [100]，within 5° |
| Density | 4.5g/cm3 |
| Reflective Index | 1.82 |
| Thermal Expansion Coefficient | 7.8x10-6 /K |
| Thermal Conductivity (W/m/K) | 14, 20°C / 10.5, 100°C |
| Mohs hardness | 8.5 |
| Stimulated Emission Cross Section | 2.8x10-19 cm-2 |
| Relaxation Time of Terminal Lasing Level | 30 ns |
| Radiative Lifetime | 550 us |
| Spontaneous Fluorescence | 230 us |
| Linewidth | 0.6 nm |
| Loss Coefficient | 0.003 cm-1 @ 1064nm |
Technical Parameters
| Dopant concentration | Nd: 0.1～2.0at% |
| Rod sizes | Diameter 1～35 mm, Length 0.3～230 mm Customized |
| Dimensional tolerances | Diameter +0.00/-0.03mm, Length ±0.5mm |
| Barrel finish | Ground Finish with 400# Grit or polished |
| parallelism | ≤ 10" |
| perpendicularity | ≤ 3′ |
| flatness | ≤ λ/10 @632.8nm |
| Surface quality | 10-5(MIL-O-13830A) |
| Chamfer | 0.1±0.05mm |
| AR coating reflectivity | ≤ 0.2% (@1064nm) |
| HR coating reflectivity | ＞99.5% (@1064nm) |
| PR coating reflectivity | 95~99±0.5% (@1064nm) |
- Some casual size in industry area :5*85mm,6*105mm,6*120mm,7*105mm,7*110mm,7*145mm etc.
- Or you can customize other size (it is better that you can send me the drawings )
- You can customize the coatings on the two end faces.
