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Nd: GdVO4

Related link: Nd: GdVO4 Crystal Components    

 

Nd: GdVO4 Crystal Basic Properties:

 

 Crystal structure

 Tetragona

 Space Group

 I41/amd

 Lattice paramete

 a=0.721nm, b=0.635nm

 Lasing Transition

 4F3/2 - 4I11/2

 Lasing wavelength

 1062.9nm

 Emission Cross Section (at 1064nm)

 7.6x10-19 cm2

 Absorption Cross Section (at 808nm)

 4.9x10-19 cm2

 Absorption Coefficient (at 808nm)

 74/cm

 Index of Refractivity (at 1064nm)

 n0=1.972, ne=2.192

 Thermal Conductivity (<110>)

 11.7W/(mxK)

 Density

 5.47g/cm3

 Nd Dopent level (atomic)

 0.1%, 0.2%, 0.3%, 0.5%, 0.7%, 1.0%...

 

Information Regarding Neodymium Laser Host Crystals:

 

 Crystal

 Nd:YVO4

 Nd:GdVO4

 Nd:YAG

 Laser wavelengths

 1064.3nm, 1342.0nm

 1062.9nm, 1340nm

 1064.2nm, 1338.2nm

 Emission bandwidth(linewidth at 1064nm)

 0.8nm

 0.45nm

 Effective laser cross section

 (emission cross section@1064nm)

 15.6x10-19cm-2

 7.6x10-19cm-2

 6.5x10-10cm-2

 Polarization

 Parallel to c-axis

 Parallel to c-axis

 unpolarized

 Radioactive lifetime at 1% Nd doping

 ~ 100μs

 ~ 95μs

 230μs

 Pump wavelength

 808.5nm

 808.4nm

 807.5nm

 Peak pump absorption at 1% doping

 ~ 41 cm-1

 ~ 57 cm-1

 

 Thermal conductivity

 5.1 W/nK

 11.7(Ref.7) W/nK

 14 W/nK

 Doping concentration range

 0.1-3.0%

 0.1-3.0%

 0.1-2.0%

 

Nd:GdVO4 Index of Refraction:

 

Wavelength

500nm

630nm

850nm

1064nm

1300nm

1400nm

1550nm

no

2.04880

2.01685

1.99490

1.98535

1.97889

1.97683

1.97410

ne

2.31219

2.25431

2.21482

2.19813

2.18742

2.18419

2.18009

 

Nd:GdVO4 Demonstrated Performance in Diode Pumped Laser Systems:

 

 Laser Operation

 Output  

 Wavelength

 Frequency 

 Doubler

 Slope Efficiency

Max.Optical Conversion Efficiency

CW

1.06µm

none

42.9%

38.1%

CW 

1.34µm

none

40.2%

n/a

CW 

0.53µm

KTP

n/a

21%

CW 

0.67µm

LBO

n/a

2.8%

Q-switched

1.06µm

none

31.6%

n/a

Q-switched

0.53µm

KTP

n/a

25%