|
Capabilities Include:
|
1) |
Nd dopant concentration: |
0.1~3 atm% Tolerance within 10% of concentration |
|
2) |
Width*Height: |
1*1~ 16*16mm |
|
3) |
Length: |
0.02 ~ 20mm |
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: |
<l/8@633nm |
|
4) |
Surface quality: |
better than 20/10 Scratch/Dig per MIL-O-1380A |
|
5) |
Parallelism: |
< 10 arc seconds |
|
6) |
Perpendicularity: |
< 5 arc minutes |
|
7) |
Surface flatness: |
<l/10 at 632.8nm |
|
8) |
Clear aperture: |
Central 95% |
|
9) |
Chamfer: |
0.15x450 |
|
10) |
Damage threshold: |
over 15J/cm2 (rods without coating) over 700 MW/cm2 (coating) |
|
11) |
Coating: |
AR@1063nm, R< 0.1% & HT@808nm, T>95%
HR@1063nm, R>99.8% & HT@808nm, T>95%
HR@1063nm, R>99.8%, HR@532 nm, R>99% & HT@808 nm, T>95%
AR@1063 nm, R<0.1% |
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 |
 |
|
coation 6-1 |
coation 6-2 |
coation 6-3 |
 |
 |
|
coation 6-4 |
coation 6-5 |
|
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=ncno=1.9854, ne=2.1981,@ 1064nmno=2.0382, ne=2.2929, @ 532nmno=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, 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 FOCTEK for repolishing and coating service.
Marks on the crystals
For general a-cut Nd:YVO4, there is a dot mark on the 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 cruystal side surface, which direct from input surface to output surface.
Standard Products Series
Foctek 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 |
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 |
For very compact design of diode pumped green lasers. Nd:YVO 4 and KTP crystals are cemented together.
Nd:YVO 4 +KTP Cemented Series
| Part# |
Nd:YVO4 Nd-3% |
KTP ( q =90°, f =23.5° ) |
| Size(mm) |
Coatings: S1 |
Size |
Coating: S4 |
| NKC001 |
1x1x0.5 |
HR@1064nm
HT@808nm |
1x1x2 |
HR@1064nm
HT@532nm |
| NKC002 |
2x2x0.5 |
2x2x2 |
| NKC003 |
1x1x0.5 |
HR@1064nm
HR@532nm
HT@808nm |
1x1x2 |
| NKC004 |
2x2x0.5 |
2x2x2 |
Notes:
1) Coating specification: AR@1064nm, R<0.1%; HR@1064nm, R>99.8%; HR@ 532nm, R>98%
HT@808nm, T>95%;
2) The unit price listed above chart is for low quantity (1-10pcs), for high volume, 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%) | |
