The 1.1% doped Nd:YAG laser crystal is the most commonly used material for solid-state lasers.
Wide doping range: 0.1-2.0 atm%.
CRYSMIT's Nd:YAG with different end cuts (plano/plano, wedge/wedge, Brewster cut, etc.)
Nd:YAG rods refurbishing service (re-polishing and re-coating) available.
Coating Options: AR@1064nm, PR@1064nm and HR@1064nm, HR@1064&HT@808nm, HR@1064&HR@532nm.
Custom coating is available.
Nd:YAG laser crystals (Neodymium Doped Yttrium Aluminum Garnet) are widely recognized as the preferred choice of a lasing medium for solid-state lasers. Good fluorescence lifetime, thermal conductivity and robust nature make Nd:YAG laser crystals suitable for high power continuous wave, high intensity Q-switched and single mode operation. CRYSMIT offers the standard Nd:YAG rods with AR coating at 1064nm and the customized rods or crystals upon customer's special request.
BBO crystals and LBO crystals are used as nonlinear optical elements in Nd:YAG laser systems for frequency conversion and wavelength manipulation. BBO crystals achieve frequency doubling, converting infrared light from Nd:YAG lasers into visible or ultraviolet light. LBO crystals also perform frequency doubling and enable sum frequency generation for tunable output. The integration of these crystals enhances the versatility and applications of Nd:YAG lasers in diverse fields, including spectroscopy, microscopy, laser displays, and remote sensing.
Basic Properties
| Crystal Structure | Cubic |
| Lattice Parameter | 12.01 Å |
| Density | 4.5 g/cm3 |
| Melting Point | 1970℃ |
| Reflective Index | 1.82 |
| Mohs Hardness | 8.5 Mohs |
| Thermal Expansion Coefficient | 7.8 × 10-6 /K <111＞, 0 - 250℃ |
| Thermal Conductivity | 14 W/cm/K, 20℃ |
| 10.5 W/cm/K, 100℃ | |
| Stimulated Emission Cross-section | 2.8 × 10-19 cm-2 |
| Relaxation Time of Terminal Lasing Level | 30 ns |
| Fluorescent Lifetime | 550 µs |
| Spontaneous Fluorescence | 230 µs |
| Linewidth | 0.6 nm |
| Loss Coefficient | 0.003 cm-1 @1064 nm |
Optical Parameter of Nd:YAG crystal
Diameter (mm) | Standard grade | Excellent grade | Super-excellent grade |
| Φ3-6.35 | ＜0.5fringes/inch | ＜0.25fringes/inch | 0.1fringes/inch |
| ＞25dB | ＞28dB | ＞30dB | |
| Φ7-10 | ＜0.7fringes/inch | ＜0.4fringes/inch | ＜0.16fringes/inch |
| ＞22 dB | ＞25 dB | ＞28dB | |
| Φ11-13 | ＜1fringes/inch | ＜0.6fringes/inch | ＜0.2fringes/inch |
| ＞20 dB | ＞23 dB | ＞26 dB | |
| Φ14-16 | ＜ 1.2fringes/inch | ＜ 0.8fringes/inch | ＜ 0.25fringes/inch |
| ＞18 dB | ＞ 20 dB | ＞23 dB |
| Dopant Concentration | Nd: 0.3~2.0 (± 0.1) atm% |
| Dimension | size up to dia.15×180mm |
| Surface Quality (Scratch/Dig) | 10/5 to MIL-PRF-13830B |
| Wavefront Distortion | λ/8 @633 nm |
| Flatness | λ/8 @633 nm |
| Parallelism | 20 arc sec |
| Perpendicularity | ＜ 15 arc min |
| Chamfer | ＜ 0.2 mm×45° |
| HR Coating | R ＞ 99.8% @1064 nm, R < 5% @808nm |
| Other HR Coatings, such as HR-1064/532 nm, HR-946 nm, HR-1319 nm and other wavelengths are available. | |
| Damage Threshold | ＞500 MW/cm2 @1064 nm,10 ns,10 Hz |
Superior performance of a 2 kHz pulse Nd:YAG laser based on a gradient-doped crystal
Meng’en Wei, Tingqing Cheng, Renqin Dou, Qingli Zhang, and Haihe Jiang
Zhenlin Liu, Toshimasa Kozeki, Yuji Suzuki, Nobuhiko Sarukura, Masahiro Hirano, and Hideo Hosono
Nonresonant power efficient directional Nd：YAG ceramic laser using a scattering cavity.pdf
11-GHz waveguide Nd:YAG laser CW mode-locked with single-layer graphene
