ND:YVO4 Crystal
Compared with Nd:YAG, Nd:YVO4 has a larger stimulated-emission cross section and a higher absorption coefficient for pump light. This high-performance laser crystal is suitable for diode-pumped lasers, especially those at medium and low powers. It can be used to build all-solid-state lasers emitting in the near-infrared, green, blue and ultraviolet regions.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Nd Doping concentration | 0.1 – 5.0 atm% |
| Standard Dimensions | 3x3x3 mm3, 3x3x1 mm3, 3x3x0.5 mm3 |
| Wavefront distortion λ [@633 nm] | λ/8 @ 633 nm |
| Scattering | Not visible; detected using a He-Ne laser |
| Crystal orientation Tolerance | ±0.5° |
| Dimensional tolerance | ±0.1 mm |
| End-face configuration | Plane / Plane |
| Surface figure λ [@633 nm] | λ/10 @ 633 nm |
| Surface Quality | 10/5 |
| Parallelism | < 10″ |
| Clear aperture | Central > 90% |
| Intrinsic loss | < 0.1% cm⁻¹ |
| Atomic density | Approximately 1.37 × 10²⁰ atoms/cm³ |
| Crystal Structure | Tetragonal zircon structure, space group D4h |
| Lattice parameters | a=b=7.12 Å, c=6.29 Å |
| Density | 4.22 g/cm³ |
| Mohs hardness | Approximately 5 |
| Coefficient of thermal expansion | a direction: 4.43 × 10⁻⁶/K; c direction: 11.37 × 10⁻⁶/K |
| Laser Wavelength | 914 nm, 1064 nm, 1342 nm |
| Thermo-optic coefficient | dna/dT = 8.5 × 10⁻⁶/K, dnc/dT = 3.0 × 10⁻⁶/K |
| Stimulated emission cross section [@1064 nm] | 25 × 10⁻¹⁹ cm² @1064 nm |
| Fluorescence lifetime [@808 nm;@808 nm (50 μs @808 nm with 2 atm% Nd doping)] | 90 μs @808 nm (50 μs @808 nm with 2 atm% Nd doping) |
| Absorption coefficient [@808 nm] | 31.4 cm⁻¹ @808 nm |
| Absorption Length [@808 nm] | 0.32 mm @808 nm |
| Intrinsic loss [@1064 nm] | <0.1% cm⁻¹ @1064 nm |
| Gain bandwidth [@1064 nm] | 0.96 nm (257 GHz) @1064 nm |
| Polarized laser emission | p-polarized, parallel to the optical axis (c axis) |
| Diode-pumped optical conversion efficiency | > 60% |
| Crystal type [@1064 nm / @808 nm / @532 nm；@1064 nm no=1.9721, ne=2.1858 @808 nm no=2.0210, ne=2.2560 @532 nm] | Positive uniaxial crystal, no=na=nb, ne=nc; no=1.9573, ne=2.1652 @1064 nm; no=1.9721, ne=2.1858 @808 nm; no=2.0210, ne=2.2560 @532 nm |
| Sellmeier equation (pure YVO₄ crystal, λ in μm) | no2=3.77834+0.069736/(λ2-0.04724) – 0.0108133λ2ne2=4.59905+0.110534/(λ2-0.04813) – 0.0122676λ2 |
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Key Features
Datasheet
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