Nd:GdVO4

Strongly - polarized laser output. Neodymium doped Gadolinium Vanadate (Nd:GdVO4 Crystals) is an excellent ideal laser host material for the DPSS (Diode pumped Solid State) micro/mini lasers due to its good physical, optical and mechanical properties.

Nd:GdVO4 has the additional advantage over Nd:YVO4 of a much higher thermal conductivity.  For CW lasing at 1.06 um and 1.34 um and intracavity doubling with KTP and LBO, the gadolinium vanadate have produced a higher slope efficiency or optical conversion than Nd:YVO4.


Physical and Optical Properties

Mohs Hardness

Glass-like, ~ 5

Refractive Index @1064

no=1.972;ne=2.192

Thermal Conductivity

11.7 W/m/K <110>

Thermal Expansion Coefficient

aa=1.5x10-6/K, ac=7.3x10-6/K

Lasing Wavelength

912.6 nm, 1063.1 nm, 1341.3nm

Stimulated Emission Cross Section

7.60x10-19cm2@1064nm

Fluorescent Lifetime

95 ms (1 atm% Nd doped)@808nm

Intrinsic Loss

Less 0.1% cm-1@1064nm

Absorption Coefficient

74 cm-1 @ 808nm (1.2%)

Linewidth

0.6nm

Polarized Emission

p parallel to optic axis (c-axis)

Diode Pumped Optical to Optical
Efficiency

>60%

Sellmeier Equation (for pure GdVO4
crystals, λ in um)

ne2=4.734369+0.1216149/(λ2 - 0.0523664) - 0.013927λ2
no2=3.8987165+0.05990622/(λ2 - 0.0514395) - 0.011319λ2

 

Featured

Large stimulated emission cross section at laser where

High absorption coefficient and wide bandwidth at pump the where

Low dependency on pump the where

Good thermal conductivity

Low lasing threshold and high slope efficiency

High laser induced damage threshold

 

 

Specifications

Nd-dopant

0.1atm%~ 3.0atm%

Orientation

A-cut/C-cut +/-0.5deg

Dimensional tolerance

+/-0.1mm

Wavefront Distortion

<λ/8@633nm

Surface flatness

<λ/[email protected]

Parallelism

<10 arc seconds

Perpendicularity

<5 arc minutes

Surface quality

better than 20/10 Scratch/Dig per MIL-O-1380A

Clear aperture

95%

Chamfer

0.15x45°

Coating

AR/HR/PR coating upon customer’s request

Damage threshold

>700MW/cm2 (coated)





 

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