- 首頁
- 產(chǎn)品
- LiNbO3 and MgO:LiNbO3
LiNbO3 and MgO:LiNbO3
鈮酸鋰（LiNbO3）晶體被廣泛用作1000nm以上波長(zhǎng)的倍頻和1064nm泵浦光的光參量放大,也可做準(zhǔn)相位匹配. 同時(shí),鈮酸鋰晶體也被廣泛應(yīng)用于光電調(diào)節(jié)器及波導(dǎo)材料,和用作Nd:YAG,Nd:YLF和摻Ti的藍(lán)寶石激光Q開關(guān). 美揚(yáng)光電公司可為上述用途提供各種規(guī)格的高質(zhì)量,大尺寸的鈮酸鋰晶體.
Main Features:
-
Large Electro-Optic (E-O) coefficients
-
Large Acousto-Optic (A-O) coefficients
Typical Applications:
-
Frequency doublers
-
Optical parametric oscillators (OPO)
-
Quasi-phase-matched (QPM) device
-
Q-switches and modulator
Specifications:
|
Dimensional Tolerance
|
±0.1mm
|
|
Angle Tolerance
|
±0.5deg
|
|
Wavefront Distortion
|
<λ/4 @ 633nm
|
|
Surface Flatness
|
<λ/8 @ 633 nm
|
|
Surface Quality
|
20/10 Scratch and Dig
|
|
Parallelism
|
< 20 arc seconds
|
|
Perpendicularity
|
< 5 arc minuntes
|
|
Clear Aperture
|
> Central 90%
|
|
AR-Coating
|
dual waveband AR coating @1064/532 nm on both surfaces, with R < 0.2% @ 1064 nm and R < 0.5% @ 0.532 nm per surface
|
Physical and Optical Properties
|
Crystal Structure
|
Trigonal, space group R3c
|
|
Cell Parameters
|
a = 0.515?, c = 13.863?, Z = 6?
|
|
Melting Point
|
1255±5oC
|
|
Curie Point
|
1140±5oC
|
|
Mohs Hardness
|
5
|
|
Density
|
4.64 g/cm3
|
|
Absorption Coefficient
|
~ 0.1%/cm @ 1064 nm
|
|
Solubility:
|
insoluble in H2O
|
|
Relative Dielectric Constant
|
eT11/e0: 85
eT33/e0: 29.5 |
|
Thermal Expansion Coefficients( @ 25oC)
|
||a, 2.0 x 10-6/K
||c, 2.2 x 10-6/K |
|
Thermal Conductivity
|
38 W /m /K @ 25oC
|
|
Transparency Range
|
420 - 5200 nm
|
|
Optical Homogeneity
|
~ 5 x 10-5 /cm
|
|
Sellmeier Equations( l in mm)
|
no2(l) = 4.9048+0.11768/(l2 - 0.04750) - 0.027169 l2
ne2(l) = 4.5820+0.099169/(l2- 0.04443) - 0.021950 l2 |
|
NLO Coefficients
|
d33 = 34.4 pm/V
d31 = d15 = 5.95 pm/V d22 = 3.07 pm/V |
|
Electro-Optic Coefficients
|
gT33 = 32 pm/V, gS33 = 31 pm/V
gT31 = 10 pm/V, gS31 = 8.6 pm/V gT22 = 6.8 pm/V, gS22 = 3.4 pm/V |
|
Half-Wave Voltage, DC
|
Electrical field ||z, light ^ z 3.03 KV
Electrical field ||x or y, light || z 4.02 KV
|
|
Efficiency NLO Coefficients
|
deff=5.7pm/V or~14.6xd36(KDP) for frequency doubling 1300 nm;
deff=5.3pm/V or~13.6xd36(KDP) for OPO pumped at 1300nm; deff=17.6pm/V or~45xd36(KDP) for quasi-phase-matched structure; |
|
Damage Threshold
|
200 MW/cm2
|
Standard Products Series
MT- Optics,Inc. can provide LiNbO3 products used for many applications, such as E-O modulator, waveguide substrate, frequency doubling, SAW wafer application and etc.
1. E-O modulator
|
Part No.
|
Dimension
|
Cut
|
Coating
|
Electrode
|
|
LNO001
|
3x3x15mm
|
Z-cut
|
AR/AR@1064nm
|
Au on X face
|
|
LNO002
|
4x4x15mm
|
Z-cut
|
AR/AR@1064nm
|
Au on X face
|
|
LNO003
|
6x6x25mm
|
Z-cut
|
AR/AR@1064nm
|
Au on X face
|
|
LNO004
|
9x9x25mm
|
Z-cut
|
AR/AR@1064nm
|
Au on X face
|
2. Waveguide substrate
|
Part No.
|
Dimension
|
End faces
|
|
LNO101
|
50x50x1mm
|
One surface polished, reverse fine ground
|
3. SAW Wafer
|
Part No.
|
Dimension
|
Thickness
|
End faces
|
|
LNO201
|
76.2mm
|
0.5mm
|
One surface polished, reverse fine ground
|
Note: 127.86deg Y cut, Y-cut, Z-cut and other cut also can be provided upon request.
Magnesium Oxide Doped Lithium Niobate Crystal
Compared with LiNbO3 crystal, MgO:LiNbO3 crystal exhibits its particular advantages for NCPM
frequency doubling (SHG) of Nd:Lasers, mixing (SFG) and optical parametric oscillators
(OPOs). MgO:LiNbO3 is also a good crystal for optical parametric oscillators (OPOs) and
amplifiers (OPAs), quasi-phase-matched doublers and integrated waveguide.
MgO:LiNbO3 has similar effective nonlinear coefficients to pure LiNbO3 . Its Sellmeier equations
(for MgO dopant 7 mol%) are:
no2=4.8762+0.11554/(λ2 - 0.04674) - 0.033119λ2
ne2=4.5469+0.094779/(λ2 - 0.04439) - 0.026721λ2
Lithium Tantalate Crystal
LiTaO3 crystal is also widely used as electro-optic modulator, with NLO and E-O properties
similar to those of LiNbO3 but higher damage threshold (>500 MW/cm for ns pulsed).
Note: 127.86deg Y cut, Y-cut, Z-cut and other cut also can be provided upon request.
