Nd:GdVO4 Crystals

Nd:GdVO₄ (Neodymium doped Gadolinium Vanadate) crystal is a promising material for diode pumped lasers. Similar to the more well-known Nd:YVO₄ crystal, Nd:GdVO₄ crystal also exhibits high gain, low threshold, and high absorption coefficients at pumping wavelengths. Moreover, Nd:GdVO4 has the additional advantage over Nd:YVO4 of a much higher thermal conductivity. For CW lasing at 1063 nm and 1340 nm and intracavity doubling with KTP and LBO, Nd:GdVO₄ has produced a higher slope efficiency or optical conversion than Nd:YVO₄.

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Part No.	Description	Application	Material	Wavelength	Bandwidth	Size	Aperture	Thickness	Length	Angle	Doping	Orientation	Displacement	Retardation	Delay	Coating	End cut	Holder	Price	Availability	Add to Cart

Newlight's Nd:GdVO₄ Features,

Low lasing threshold and high slope efficiency

Large stimulated emission cross-section at lasing wavelength

High absorption over a wide pumping wavelength bandwidth

Optically uniaxial and large birefringence emitting polarized laser

Large thermal conductivity, ~ twice of that of Nd:YVO₄

Structure and Basic Physical Properties:

Crystal Structure	Zircon tetragonal, a=b=7.212, c=6.350
Space Group	Tetragonal I41/amd
Melting Point	1780 ^oC
Thermal Conductivity, <110>	11.7 W/m/K
Thermal Expansion Coefficient (@300K)	α_a=1.5x10^-6 /K α_c=7.3x10^-6/K
Specific Heat @25^oC	32.6 (cal/mol/K )
Thermo-Optical Coefficient (dn/dT)	4.7x10^-6 /^oC
Density	5.48 g/cm³
Mohs Hardness	4.6 - 5

Optical Properties:

Lasing Transition	4F_3/2 - 4I_1/2
Lasing Wavelength	1062.9 nm, 1340.0 nm
Emission Cross Section (E//c at 1064 nm)	7.6x10^-19 cm²
Peak absorption wavelength	808 nm
Absorption Cross Section (E//c at 808 nm)	4.9x10^-19 cm²
Absorption Linewidth	3 nm
Relaxation Time of Terminal Lasing Level	100 µs
Absorption Coefficient (1% Nd)	57 cm^-1 with E//c @ 808 nm

Index of Refraction:

Wavelength (nm)	630	850	1064	1300	1550
n_o	2.01685	1.99490	1.98535	1.97889	1.97410
n_e	2.25431	2.21482	2.19813	2.18742	2.18009

Specifications on Finshed Nd:GdVO4:

Nd: Dopant Level	0.3 - 1.0% (Atomic Pencentage, atm%)
Wavefront Distortion	< λ/4 per 25 mm @ 633 nm
Scattering Sites	Invisible when probed with a He-Ne laser
Orientation	The propagation axis is along the a-axis ( +/-0.5 deg.)
Dimensional Tolerance	+/-0.1 mm
End-faces Configuration	Plano/Plano
Surface Quality:	10/5 Scratch/Dig per MIL-O-13830B
Flatness	λ/10 at 633 nm
Clear Aperture	> Central 90%
Parallelism	< 10 arc sec.
Intrinsic Loss	< 0.1% cm-1

Standard coatings:

AR/AR:
On the first surface S1: AR@1064 nm (R<0.1%), HT@808 nm(T>95%);
On the second surface S2: AR@1064 nm

HR/AR:
On the first surface S1: HR@1064 nm (R>99.8%), HT@ 808 nm(T>95%);
On the second surface S2: AR@1064 nm

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