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Nd:YVO4 - Neodymium Doped Yttrium Orthovanadate

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Nd:GdVO4 - Neodymium Doped Gadolinium Orthovanadate

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Nd:GdVO4 - Neodymium Doped Gadolinium Orthovanadate

Nd:GdVO4 is an excellent laser crystal with similar properties to Nd:YVO4 in physical, optical and mechanical properties. It is an ideal laser host crystal for diode-pumped all-solid-state laser.

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Laser Crystals

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Description

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CASTECH's Nd:GdVO₄ is featured by：

  •　Large stimulated emission cross section at laser wavelength;
      •　High absorption coefficient and wide bandwidth at pump wavelength;
      •　Low dependency on pump wavelength;
      •　Good thermal conductivity;
      •　Low lasing threshold and high slope efficiency;
      •　High laser induced damage threshold;
      •　Strongly-polarized laser output.

Table 1. Basic Properties

Crystal Structure	Tetragonal, space group I4₁/amd
Lattice Parameter	a = 7.21 Å, c = 6.35 Å
Lasing Transition	⁴F_3/2→⁴I_11/2
Lasing Wavelength	1062.9 nm
Emission Cross Section (at 1064 nm)	7.6 × 10^-19 cm²
Absorption Cross Section (at 808 nm)	4.9 × 10^-19 cm²
Absorption Coefficient (at 808 nm)	74 cm^-1
Index of Refractivity ( at 1064 nm)	n_o = 1.972, n_e = 2.192
Thermal Conductivity (<110＞)	11.7 W/m/K
Density	5.47 g/cm³
Nd Dopant Concentration	0.1%, 0.2%, 0.3%, 0.5%, 0.7%, 1.0%...

Table 2. Material Properties: Comparing Nd:GdVO₄ and Nd:YVO₄

Crystal	Nd:GdVO₄		Nd:YVO4
Crystal Structure, Space Group	Tetragonal, I4₁/amd		Tetragonal, I4₁/amd
Lattice Parameter	a = 7.21 Å, c = 6.35 Å		a = 7.21 Å, c = 6.29 Å
Melting Temperature (℃)	1780		1825
Thermal Expansion @25 ℃, ×10^-6/℃	a	1.5	a	4.43
	c	7.3	c	11.4
Specific Heat @25 ℃, cal/mol·K	32.6		24.6
dn/dT, × 10^-6 /℃	4.7		2.7

Table 3. Information Regarding Neodymium Laser Host Crystals

Crystal	Nd:YVO₄	Nd:GdVO₄	Nd:YAG
Laser Wavelengths	1064.3 nm, 1342.0 nm	1062.9 nm, 1340 nm	1064.2 nm, 1338.2 nm
Emission Bandwidth (linewidth at 1064 nm)	0.8 nm	No data	0.6 nm
Effective Laser Cross Section (emission cross section at 1064 nm)	15.6 × 10-19 cm²	7.6 × 10-19 cm²	6.5 × 10-19 cm²
Polarization	Parallel to c-axis	Parallel to c-axis	unpolarized
Fluorescence Lifetime with 1% Nd Doping	~ 100 µs	~ 95 µs	~ 230 µs
Pump Wavelength	808.5 nm	808.4 nm	807.5 nm
Peak Pump Absorption at 1% Doping	~ 41 cm-1	~ 57 cm-1
Thermal Conductivity	5.1 W/m/K	11.7 W/m/K	14 W/m/K
Doping Concentration Range	0.1 - 3.0%	0.1 - 3.0%	0.3- 2.0%

Specifications of Nd:GdVO₄ crystal from CASTECH：

Table 4. Specifications

Dimension Tolerance	(W ± 0.1 mm) × (H ± 0.1 mm) × (L +0.2/-0.1 mm)
Clear Aperture	Central 90% of the diameter
Flatness	≦λ/8 @633 nm (L≧2.5 mm) ≦λ/4 @633 nm (L<2.5 mm)
Surface Quality (Scratch/Dig)	10/5 to MIL-PRF-13830B
Transmitted Wavefront Distortion	≦λ/4 @633 nm
Parallelism	20 arc sec
Perpendicularity	≦15 arc min
Angle Tolerance	≦±0.5°
Chamfer	≦0.2 mm × 45°
Chip	≦0.1 mm
AR Coating	R<0.2% @1064 nm
HR Coating	R＞99.8% @1064 nm, T＞95% @808 nm
Quality Warranty Period	One year under proper use.

Keyword:

solid state laser

Nd:GdVO4

Nd-doped laser crystal

high slope efficiency

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Nd:YVO4 - Neodymium Doped Yttrium Orthovanadate

Nd:YLF - Neodymium Doped Yttrium Lithium Fluoride

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Nd:GdVO4 - Neodymium Doped Gadolinium Orthovanadate

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Nd:GdVO4 - Neodymium Doped Gadolinium Orthovanadate
Nd:GdVO4 is an excellent laser crystal with similar properties to Nd:YVO4 in physical, optical and mechanical properties. It is an ideal laser host crystal for diode-pumped all-solid-state laser.

Description

Cas'Tech Class

Parameters

Download

CASTECH's Nd:GdVO₄ is featured by：

Table 1. Basic Properties

Crystal Structure	Tetragonal, space group I4₁/amd
Lattice Parameter	a = 7.21 Å, c = 6.35 Å
Lasing Transition	⁴F_3/2→⁴I_11/2
Lasing Wavelength	1062.9 nm
Emission Cross Section (at 1064 nm)	7.6 × 10^-19 cm²
Absorption Cross Section (at 808 nm)	4.9 × 10^-19 cm²
Absorption Coefficient (at 808 nm)	74 cm^-1
Index of Refractivity ( at 1064 nm)	n_o = 1.972, n_e = 2.192
Thermal Conductivity (<110＞)	11.7 W/m/K
Density	5.47 g/cm³
Nd Dopant Concentration	0.1%, 0.2%, 0.3%, 0.5%, 0.7%, 1.0%...

Table 2. Material Properties: Comparing Nd:GdVO₄ and Nd:YVO₄

Crystal	Nd:GdVO₄		Nd:YVO4
Crystal Structure, Space Group	Tetragonal, I4₁/amd		Tetragonal, I4₁/amd
Lattice Parameter	a = 7.21 Å, c = 6.35 Å		a = 7.21 Å, c = 6.29 Å
Melting Temperature (℃)	1780		1825
Thermal Expansion @25 ℃, ×10^-6/℃	a	1.5	a	4.43
	c	7.3	c	11.4
Specific Heat @25 ℃, cal/mol·K	32.6		24.6
dn/dT, × 10^-6 /℃	4.7		2.7

Table 3. Information Regarding Neodymium Laser Host Crystals

Crystal	Nd:YVO₄	Nd:GdVO₄	Nd:YAG
Laser Wavelengths	1064.3 nm, 1342.0 nm	1062.9 nm, 1340 nm	1064.2 nm, 1338.2 nm
Emission Bandwidth (linewidth at 1064 nm)	0.8 nm	No data	0.6 nm
Effective Laser Cross Section (emission cross section at 1064 nm)	15.6 × 10-19 cm²	7.6 × 10-19 cm²	6.5 × 10-19 cm²
Polarization	Parallel to c-axis	Parallel to c-axis	unpolarized
Fluorescence Lifetime with 1% Nd Doping	~ 100 µs	~ 95 µs	~ 230 µs
Pump Wavelength	808.5 nm	808.4 nm	807.5 nm
Peak Pump Absorption at 1% Doping	~ 41 cm-1	~ 57 cm-1
Thermal Conductivity	5.1 W/m/K	11.7 W/m/K	14 W/m/K
Doping Concentration Range	0.1 - 3.0%	0.1 - 3.0%	0.3- 2.0%

Specifications of Nd:GdVO₄ crystal from CASTECH：

Table 4. Specifications

Dimension Tolerance	(W ± 0.1 mm) × (H ± 0.1 mm) × (L +0.2/-0.1 mm)
Clear Aperture	Central 90% of the diameter
Flatness	≦λ/8 @633 nm (L≧2.5 mm) ≦λ/4 @633 nm (L<2.5 mm)
Surface Quality (Scratch/Dig)	10/5 to MIL-PRF-13830B
Transmitted Wavefront Distortion	≦λ/4 @633 nm
Parallelism	20 arc sec
Perpendicularity	≦15 arc min
Angle Tolerance	≦±0.5°
Chamfer	≦0.2 mm × 45°
Chip	≦0.1 mm
AR Coating	R<0.2% @1064 nm
HR Coating	R＞99.8% @1064 nm, T＞95% @808 nm
Quality Warranty Period	One year under proper use.