V:YAG Crystal Manufacturer | YAG Rods

Crystals Materials

V:YAG Crystal for aerospace, medical, and industrial applications

High ground state absorption

Insignificant excited state absorption

The high contrast of the Q-switch

Good optical, mechanical, and thermal properties

UV-resistant and features a high damage threshold

Surface Quality: 10/5 Scratch/Dig MIL-O-1380A

Parallelism: < 10″

Perpendicularity: < 5'

Clear Aperture: > 90%

Surface Flatness: < λ/10 @ 632.8 nm

Coating: AR/HR/PR coating upon customer's request

Quality Warranty Period: One year

Key Words: Passive Q-Switched Crystals , V:YAG Crystals , YAG Rods

V:YAG Crystal is a new material of laser saturable absorber and passive Q-switch in wavelength range of 1.06 - 1.44 μm. It is especially suitable for neodymium laser of 1.3 μm. V:YAG crystal can be used with active laser media such as Nd:YAG, Nd:YAP, Nd:KGW, Nd:YVO4 and provide good lasing characteristics in passive Q-switched lasers.

Specifications
Physical and chemical properties

Specifications of V³⁺:YAG Crystal

Property	Value
Orientation	[100] or [110]
Initial absorption coefficient	0.1~8.5 cm^-1 @1064 nm
Initial transmission	3%~98%
Wavefront distortion	<λ/8 @ 632.8nm
Thickness/Diameter Tolerance	±0.05 mm
Surface Flatness	<λ/10 @ 633 nm
Surface quality	10/5 per MIL-O-13830A
Parallelism	< 10 arcsec
Perpendicularity	10 arcmin
Clear Aperture	> 90%
Chamfer	< 0.2 mm @ 45°
Coating	AR/HR/PR coating

Physical and chemical properties

Property	Value
Chemical Formula	Cr⁴⁺:Y₃Al₅O₁₂
Crystal Structure	cubic - la3d
Lattice Parameter	12.01 Å
Mass Density	4.56 g/cm³
Melting Point	1970°C
Mohs Hardness	8.5
Young's Modulus	335 GPa
Tensile Strength	2 GPa
Thermal Conductivity	0.1213 W/m/K
Specific Heat	0.59 J/g/K
Thermal Shock Resistance Parameter	800 W/m
Thermal Expansion	7.7 - 8.2 × 10^-6/°C @ 25°C
Extinction Ratio	25 dB
Refractive Index @1064 nm	1.83
Charge Compensating Ion	Ca²⁺, Mg²⁺

Stock specification list

If need other specifications and quantities products, please contact us(sales@aogcrystal.com).

Part Number	Face size	Initial Transmission @1064 nm	Coating
V-YAG-001	Ø5 mm	T0=30%~95%	AR(R<0.2%)@1310-1360 nm
V-YAG-002	3.0*3.0 mm	T0=30%~95%	AR(R<0.2%)@1310-1360 nm

Notes

Anti-reflection coatings are available at your specified wavelength.

Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.

To inquiry or order a finished V³⁺:YAG laser rod, please specify the specification listed above, for common application, we only need to know the main specification: V-dopant concentration, sizes, and coating. For special request, please specify specification in details for evaluation and fabrication.

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