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Wed May 17 2017
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Nd:YVO4 Laser Crystal

Nd:YVO4 - Neodymium Doped Yttrium Orthovanadate is one of most efficient laser crystal for diode-pumped solid-state lasers. Compared with Nd:YAG, Nd:YVO4 lasers crystal posses the advantages of lower dependency on pump wavelength and temperature control of a diode laser, wide absorption band, higher slope efficiency, lower lasing threshold, linearly polarized emission and single-mode output. For the applications in which compact design and the single frequency output are desired, Nd:YVO4 shows its particular advantages over other commonly used laser crystals.

Nd:YVO4 Crystal

The Nd:YVO4 diode-pumped compact laser and its frequency-doubled green, red or blue laser light have been used in machining, material processing, spectroscopy, wafer inspection, light show, medical diagnostics, laser printing.

Features of Nd:YVO4 Laser crystal

- Large stimulated emission cross-section
- High absorption coefficient, wide absorption bandwidth
- High laser induced damage threshold
- Good physical, optical and mechanical properties.

Nd:YVO4 Physical and Optical Properties

Crystal Structure: Zircon Tetragonal, space group D4h, a=b=7.12, c=6.29
Melting point: 1825 °C
Hardness: Glass-like, Mohs 5
Density: 4.22 g/cm³
Thermal Conductivity: //c: 5.23 W/m.K; ⊥c: 5.10 W/m.K
Thermal Expansion: α(a)=4.43-6, α(c)=11.37x10-6/K
Lasing Wavelength: 914 nm, 1064 nm, 1342 nm
Fluorescent lifetime: 90 µs (1.1% doping), 50 µs ( 2.0% doping)
Stimulated emission cross section: 25.0 x 10-19/cm² @1064nm
Refractive Index: no=1.9573, ne=2.1652 @1064nm
no=1.9721, ne=2.1858 @808 nm
no=2.0210, ne=2.2560 @532 nm
Thermal Optical Coefficient: dna/dT = 8.5x10-6/K dnc/dT =3.0x10-6/K
Absorption Coeffient: 31.4/cm @808nm 1.1% doping
Polarized Laser Emission: π polarization //c

Nd:YVO4 General Specifications

Nd dopant concentration: 0.2 ~ 3 atm%
Dimension Tolerance: +0/-0.1mm
Surface Quality: 10-5 Scratch-dig
Surface Flatness: λ/10 @633nm
Chamfer: 0.1mm@45°
Clear Aperture: Central 90% of Diameter
Paralallism: 10 arc seconds
Perpendicular: 5 arc minutes
Orentation Angle: +/-0.5°
Damage threshold: >15J/cm² (without coating) or >700 MW/cm² (coating)
Coating: AR Coating R< 0.1%@ 1064nm & HT @ 808nm T>95%
HR Coating R>99.8%@ 1064nm & HT@ 808nm T>95%

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1. Nd:YVO4 Laser Crystal

0.25% 4x4x18 mm Nd:YVO4 Laser Crystal

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0.25% 4x4x8 mm Nd:YVO4 Laser Crystal

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0.5% 5x5x10 mm Nd:YVO4 Laser Crystal

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0.5% 5x5x5 mm Nd:YVO4 Laser Crystal

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1% 3x3x5 mm Nd:YVO4 Laser Crystal

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1% 3x3x2 mm Nd:YVO4 Laser Crystal

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