Title

福州美扬光电有限公司可提供各种规格的高质量,大尺寸的铌酸锂晶体. 欢迎电询！

铌酸锂（LiNbO₃）晶体被广泛用作1000nm以上波长的倍频和1064nm泵浦光的光参量放大,也可做准相位匹配. 同时,铌酸锂晶体也被广泛应用于光电调节器及波导材料,和用作Nd:YAG,Nd:YLF和掺Ti的蓝宝石激光Q开关. 美扬光电公司可为上述用途提供各种规格的高质量,大尺寸的铌酸锂晶体.

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 = 0.515Å, c = 13.863Å, Z = 6Å
Melting Point	1255±5^oC
Curie Point	1140±5^oC
Mohs Hardness	5
Density	4.64 g/cm³
Absorption Coefficient	~ 0.1%/cm @ 1064 nm
Solubility:	insoluble in H₂O
Relative Dielectric Constant	e^T₁₁/e₀: 85 e^T₃₃/e₀: 29.5
Thermal Expansion Coefficients( @ 25^oC)	\|\|a, 2.0 x 10^-6/K \|\|c, 2.2 x 10^-6/K
Thermal Conductivity	38 W /m /K @ 25^oC
Transparency Range	420 - 5200 nm
Optical Homogeneity	~ 5 x 10^-5 /cm
Sellmeier Equations( l in mm)	n_o²(l) = 4.9048+0.11768/(l² - 0.04750) - 0.027169 l² n_e²(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	g^T₃₃ = 32 pm/V, g^S₃₃ = 31 pm/V g^T₃₁ = 10 pm/V, g^S₃₁ = 8.6 pm/V g^T₂₂ = 6.8 pm/V, g^S₂₂ = 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	d_eff=5.7pm/V or~14.6xd₃₆(KDP) for frequency doubling 1300 nm; d_eff=5.3pm/V or~13.6xd₃₆(KDP) for OPO pumped at 1300nm; d_eff=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).