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Nd:YVO4 is one of the most efficient laser host crystals for all-solid-state laser diode pumped lasers. Its large stimulated emission cross-section at lasing wavelength, high absorption coefficient and wide absorption bandwidth at pump wavelength, high laser induced damage threshold as well as good physical, optical and mechanical properties make it an excellent crystal for high power, stable and cost-effective diode pumped solid-state lasers.

With advanced technology on growing and manufacturing high optical quality Nd:YVO4 crystals, Lasertec can provide a wide variety of finished crystals, our general Nd:YVO4 production capabilities include:

1

Capabilities Include:

1)

Nd dopant concentration:

0.1~3 atm% Tolerance within 10% of concentration

2)

 low absorption at 1.064um less than 1000ppm see attach document
3)

Width*Height:

1*1~ 16*16mm

4)

Length:

0.02 ~ 20mm
2 1

Typical Specification and Tolerance:

1)

Orientation:

a-cut crystalline direction(±0.20)

2)

Dimensional tolerance:

±0.1mm(typical)High precision ±0.005mm can be available upon request.

3)

Wavefront Distortion:

<λ/8@632.8nm

4)

Surface quality:

better than 20/10 Scratch/Dig per MIL-PRF-1380B
better than 10/5 per MIL-PRF-1380B after polished

5)

Parallelism:

< 10 arc seconds

6)

Perpendicularity:

< 15 arc minutes

7)

Surface flatness:

<λ/10 at 632.8nm

8)

Clear aperture:

Central 95%

9)

Chamfer:

0.15x45°

10)

Damage threshold:

over 15J/cm2 (rods without coating) over 700 MW/cm2 (coating)

11)

Coating:

 AR@1064nm, R< 0.1% & HT@808nm, T>95%
HR@1064nm, R>99.8% & HT@808nm, T>95%
HR@1064nm, R>99.8%, HR@532 nm, R>99% & HT@808 nm, T>95%
AR@1064 nm, R<0.1%
1 2 3
ARcoating
ARcoating
ARcoating
1
2
HRcoating
HRcoating

Peak Absorption Wavelength

808.5 nm

Lasing Wavelength

912.6 nm, 1063.1 nm, 1341.3 nm

Crystal Class

Positive uniaxial, no=na=nb ne=nc,no=1.9854, ne=2.1981,@ 1064nm,no=2.0382, ne=2.2929, @ 532nm,no=1.9977, ne=2.2198, @ 808nm

Thermal Optical Coefficient

dn/dT=4.7x10-6/K

Stimulated Emission Cross-Section

7.60x10-19cm2 , @1064 nm

Fluorescent LifetimeNd=1.2 atm%

95 ms @ 808 nm

Loss Coefficient

0.003 cm-1@ 1064 nm

Absorption CoefficienceNd=1.2 atm%

74 cm-1 @ 808 nm

Absorption LengthNd=1.2 atm%

0.18 mm @ 808 nm

Intrinsic LossNd=1.2 atm%

Less 0.1% cm-1 , @1064 nm

Line width

0.6 nm

Polarized Laser Emission

p parallel to optic axis (c-axis)

Diode Pumped Optical to Optical Efficiency

> 60%

Sellmeier Equation (for pure GdVO4 crystals)

ne2=4.734369 + 0.1216149/(l2 - 0.0523664) - 0.013927l2 no2=3.8987165+0.05990622/(l2 - 0.0514395) - 0.011319l2
Atomic Density ~1.37*1020 atoms/cm2
Crystal Structure Zircon Tetragonal. space group D4h, a=b=7.12, c=6.29
Density 4.22 g/cm2
Mohs Hardness Glass-like, ~5
Thermal Expansion Coefficient aa=4.43*10-6 /K, aa=11.37*10-6/K
Thermal Conductivity Coefficient IIC:5.23 W/m/K; ┷ C: W/m/K

How to handle the Nd:YVO4 crystal
When you receive crystals from Lasertec, please make sure that only qualified personnel are able to open inner packing at clean environment. Please prevent finger print, oil and other substances from adhering to the polished or coated surfaces.

If the surfaces are contaminated, please blow the surfaces with air ball. If there is still pollution on the crystal surfaces, please clean the surfaces with cleaning liquid and soft silk. The mixing liquid of 50% high purity alcohol and 50% high purity ether is recommended as cleaning liquid. Please notify that the contaminated surfaces are very easy to be damaged. When polished surfaces are fogged or damaged, please ask Lasertec for repolishing and coating service.

Marks on the crystals
For general a-cut Nd:YVO4, there is a arrow mark on the side surface, which normal to the optical axis. And, if the coating is different on the input and output surface, there is an arrow mark on the crystal side surface, which direct from input surface to output surface.

Standard Products Series
Lasertec have a lot of standard series kits of diode pumped laser optics, is's easy to select what you need listed below

Part

Size

(mm)

Nd+doped

Coatings

S1

S2

NYV001

3x3x1

0.5%

AR@1064nm, HT@808nm

AR@1064nm,

NYV002

3x3x1

1%

AR@1064nm, HT@808nm

AR@1064nm,

NYV003

3x3x1

1%

HR@1064nm, HT@808nm,

AR@1064nm,

NYV004

3x3x1

1%

HR@1064nm,HT@808nm,HR@532nm

AR@1064nm,

NYV005

3x3x3

0.5%

AR@1064nm, HT@808nm

AR@1064nm, HT@808nm

NYV006

3x3x3

0.5%

HR@1064nm, HT@808nm

AR@1064nm, HT@808nm

NYV007

3x3x5

0.5%

AR@1064nm, HT@808nm

AR@1064nm, HT@808nm

NYV008

3x3x8

0.5%

AR@1064nm, HT@808nm

AR@1064nm, HT@808nm

NYV009

3x3x12

0.5%

AR@1064nm, HT@808nm

AR@1064nm, HT@808nm

NYV010

3x3x3

1.0%

AR@1064nm, HT@808nm

AR@1064nm, HT@808nm

NYV011

3x3x3

1.0%

HR@1064nm, HT@808nm

AR@1064nm, HT@808nm

NYV101

3x3x0.5

3.0%

HR@1064nm, HR@532nm,HT@808nm

AR@1064nm&532 nm

NYV102

3x3x1

1.0%

HR@1064nm, HR@532nm,HT@808nm

AR@1064nm&532 nm

NYV103

3x3x1

2.0%

HR@1064nm, HR@532nm,HT@808nm

AR@1064nm&532 nm

NYV104

3x3x3

1.0%

HR@1064nm, HR@532nm,HT@808nm

AR@1064nm&532 nm

NYV105

3x3x5

0.5%

HR@1064nm, HR@532nm,HT@808nm

AR@1064nm&532 nm

NYV106

3x3x2

1.0%

HR@1064nm, HR@532nm,HT@808nm

AR@1064nm&532 nm

NYV107

3x3x2

0.5%

HR@1064nm, HR@532nm,HT@808nm

AR@1064nm&532 nm
NYV201 3x3x10 0.27% AR@1064&808 (R<0.1%@1064nm for laser application)
NYV202 4x4x7 0.4% AR@1064&808 (R<0.1%@1064nm for laser application)
NYV203 3x3x12 0.15% AR@1064&808 (R<0.1%@1064nm for laser application)

Lasertec can supply  Nd:YVO4 crystals optically cemented with KTP crystals for diode pumped laser pointers. The combination of the lasing and doubling crystals with coatings on the crystal surfaces acting as cavity mirrors makes it an reality of an ultra-compact green laser for daily life. 

2

Nd:YVO 4 +KTP Cemented Series

Part# Nd:YVO4 Nd-2% KTP ( q =90°, f =23.5° )
Size(mm) Coating: S1 Size Coating: S4
GLC001 1x1x0.5 HR@1064nm
HT@808nm
HR@532nm
1x1x2 HR@1064nm
HT@532nm
GLC002 2x2x0.5 2x2x2
GLC003 1x1x0.5 1x1x2
GLC004 2x2x0.5 2x2x2

Notes:
1) Coating specification: AR@1064nm, R<0.1%; HR@1064nm, R>99.9%; HR@ 532nm, R>98% ; HT@808nm, T>95%;
2) The unit price please ask our sales for quantity discount.

Nd:YVO 4 properties compare with Nd:YAG

Nd:YAG, 1 atm% Nd Nd:YVO 4 1 atm% Nd
Fluorescence lifetime ( t ) 230 m s 100 m s
Stimulated emission cross section ( s ) s 21=2.7-8.8x10-19cm-2 15.6x10-19cm-2( p -pol)
Absorption coefficient 7.1cm -1 31.2 cm -1
La 1.41mm 0.32mm
Threshold power 115mw 78mw
Converstion efficiency h s 38.6% 48.6%
Thermal conductivity coefficient ||c:14w/m/k
^ c: 10.5w/m/k 		||c:5.23w/m/k
^ c: 5.10w/m/k
Highest dopant level 1.2% 3%
Crystals length for the same output power(<200mw) ~5mm (1%) ~0.5mm (3%)
~1mm (1%)
Crystals length for the same output power(~2w) ~50(1%) 5mm(0.5%)

Hot Applications:
1 Nd:YVO4/LBO crystals produces 4.6W CW blue @ 457nm

 

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:Email: sales@lcoptical.com