LiNbO3

LiNbO ₃; Crystal is widely used as frequency doublers for wavelength > 1 mm and optical parametric oscillators (OPOs) pumped at 1064 nm as well as quasi-phase-matched (QPM) devices. Due to its large Electro-Optic (E-O) and Acousto-Optic (A-O) coefficients。
FOCtek provides high quality and large size LiNbO3 crystals for laser frequency doublers, OPOs and quasi-phase-matched doublers, as well as waveguide substrate and SAW wafers. High quality LiNbO 3; finished components with aperture of (2 - 15) x (2 - 15) mm2 and length up to 50 mm for frequency doublers and optical parametric oscillators (OPOs), 50x50x1 mm3 or Dia. 3" x 1 mm LiNbO3 substrate for waveguide optics, and Dia. 3" SAW wafers are available with high volume and at low price.

Physical and Optical Properties:

Crystal Structure	Trigonal, space group R 3c
Cell Parameters	a = 0.515, c = 13.863, Z = 6
Melting Point	1255 +/-5℃
Curie Point	1140 +/-5℃
Mohs Hardness	5
Density	4.64 g/cm³
Absorption Coefficient	~ 0.1%/cm @ 1064 nm
Solubility:	insoluble in H ₂ O
Relative Dielectric Constant	ε ^T11/ε 0 : 85 ε ^T33/ε 0 : 29.5
Thermal Expansion Coefficients at 25℃	\|\|a, 2.0 x 10^-6 /K @ 25℃ \|\|c, 2.2 x 10^-6 /K @ 25℃
Thermal Conductivity	38 W /m /K @ 25℃

Transparency Range	420 - 5200 nm
Refractive Indices	n_e = 2.146, n _o = 2.220 @ 1300 nm n _e = 2.156, n _o = 2.322 @ 1064 nm n _e= 2.203, n _o = 2.286 @ 632.8 m
Optical Homogeneity	~ 5 x 10 ^-5 /cm
Sellmeier Equations( l in m m)	n _o ² (l ) = 4.9048+0.11768/(l²- 0.04750) - 0.027169l² n _e² ( l) = 4.5820+0.099169/( l² - 0.04443) - 0.021950 l²

NLO Coefficients	d 33 = 34.4 pm/V d 31 = d 15 = 5.95 pm/V d 22 = 3.07 pm/V
Electro-Optic Coefficients	γ^T ₃₃ = 32 pm/V, γ^S ₃₃ = 31 pm/V γ ^T ₃₁= 10 pm/V, γ ^S ₃₁= 8.6 pm/V γ ^T ₂₂ = 6.8 pm/V, γ^S₂₂ = 3.4 pm/V,
Half-Wave Voltage, DC Electrical field \|\|z, light ^ z : Electrical field \|\|x or y, light \|\| z:	3.03 KV 4.02 KV
Damage Threshold	200 MW/cm ² (10 ns)
Efficiency NLO Coefficients	d eff =5.7pm/V or~14.6xd ₃₆ (KDP) for frequency doubling 1300 nm; d eff =5.3pm/V or~13.6xd ₃₆(KDP) for OPO pumped at 1064nm; d eff =17.6pm/V or~45xd ₃₆ (KDP) for quasi-phase-matched structure;

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