LBO(Lithium Triborate) – Laser Crystal – Nonlinear Crystal – Customized Products

Product ID: 6653


$100

LBO(Lithium Triborate) – Laser Crystal – Nonlinear Crystal – Customized Products

LiB3O5 (Lithium Triborate) nonlinear crystal is one of the most excellent nonlinear optical crystals found so far that can be used for non-critical phase matching laser frequency doubling.

It has good nonlinear optical and stable physical and chemical properties, which is especially important because its dispersion amount is sensitive to temperature changes.

Due to its large damage threshold, it can achieve non-critical phase matching during the frequency doubling process, which means it can achieve high-power fundamental pumping. Also, longer optical crystals can be used, which are undoubtedly useful for obtaining high-power frequency doubling lasers.

At 1.064 μm light, the effective SHG coefficient of the LBO nonlinear crystal is three times higher than that of the KDP.

The optical damage threshold of the LBO is the highest among the commonly used inorganic nonlinear optical crystals. Therefore, it is among the best choices for high-power second harmonic generators and other nonlinear optical applications.

Note:
$100 is a deposit, not the final price of the product. Please contact us for price if needed.

Features of LBO Nonlinear Crystal:

High optical uniformity
Wide transparent area
Wide tunable wavelength range
low sensitivity to moisture
Wide receiving angle, small discrete angle
Spectral Noncritical Phase Matching (NCPM) close to 1300 nm
Class I, II Non-Critical Phase Matching (NCPM) Wideband Range
High damage threshold (1053 nm laser with a pulse width of 1.3ns can reach 10GW/cm2)
High frequency doubling conversion efficiency (equivalent to 3 times that of KDP crystal)

Physical and Chemical Properties

Attribute Numerical
Chemical Formula LiB3O5
Crystal Structure Rhombic, Space GroupPna21,Point Group mm2
Lattice Constant a=8.4473Å ,b=7.3788Å, c=5.1395Å, Z=2
Mass Density 2.47 g/cm3
Mohs Hardness 6
Melting Point About 834°C
Thermal Conductivity 3.5W/m/K
Birefringence Negative Biaxial Crystal:λ=0.5321μm,2Vz =109.2˚

Nonlinear Optical Properties

Attribute Numerical
SHG Phase Matching Range 551 ~ 2600nm (Type I);790-2150nm (Type II)
NLO Coefficient deff(I)=d32cosΦ(Type I in the XY Plane)
deff(I)=d31cos2θ+d32sin2θ(Type I in the XZ Plane)
deff(II)=d31cosθ(Type II in the YZ Plane)
deff(II)=d31cos2θ+d32sin2θ(Type II in the XZ Plane)
NLO Sensitivity Does not Disappear d31=1.05 ± 0.09 pm/V
d32=-0.98 ± 0.09 pm/V
d33= 0.05 ± 0.006 pm/V
Thermal-optical Coefficient(°C<,<λinμm) dnx/dT=-9.3X10-6
dny/dT=-13.6X10-6
dnz/dT=(-6.3-2.1λ)X10-6
Angle to Accept 6.54mrad-cm(Φ,I型,1064 SHG)15.27mrad-cm(q,II型,1064 SHG)

Linear Optical Properties

Attribute Numerical
Transparent Range 169 – 2600 nm
Absorption Coefficient <0.1%/cm @1064nm;<0.3%/cm @532nm
Refractive Index,  #colspan#
At 1.0642 mm nx= 1.5656,
ny= 1.5905,
nz= 1.6055
At 0.5321 mm n= 1.5785,
n= 1.6065,
nz = 1.6212
At 0.2660 mm nx = 1.5973,
ny = 1.6286,
nz = 1.6444
Sellmeier Equation(λ in μm) nx2=2.454140+0.011249/(λ2-0.011350)-0.014591λ2-6.60×10-5λ4
ny2=2.539070+0.012711/(λ2-0.012523)-0.018540λ2+2.0×10-4λ4
nz2=2.586179+0.013099/(λ2>-0.011893)-0.017968λ2-2.26×10-4λ4

Phase Matching Angle Experimental Value (T=293K)

Interaction Wavelength[μm] Φexp [deg] θexp [deg]
XY Plane θ= 90°
          SHG, o+o ⇒ e
1.908⇒0.954 23.8
1.5⇒0.75 7
1.0796⇒0.5398 10.6/10.7
1.0642⇒0.5321 11.3/11.4/11.6/11.8
0.946⇒0.473 19.4/19.5
0.930⇒0.465 21.3
0.896⇒0.448 23.25
0.88⇒0.44 24.53
0.850⇒0.425 27
0.84⇒0.42 27.92
0.836⇒0.418 28.3
0.80⇒0.40 31.7
0.794⇒0.397 32.3
0.786⇒0.393 33
0.78⇒0.39 33.7
0.7735⇒0.38675 34.4
0.75⇒0.375 37.13/37
0.746⇒0.373 37.5
0.7094⇒0.3547 41.8/41.9/42/43.5
0.63⇒0.315 55.6
0.555⇒0.2775 86
0.554⇒0.277 90
          SFG, o+o ⇒ e
1.3414+0.6707⇒0.44713 20
1.0642+0.5321⇒0.35473 37/37.1/37.2
1.053+0.5265⇒0.351 38.2
1.0642+0.35473⇒0.26605 60.7/61
0.86+0.43⇒0.2867 61
1.3188+0.26605⇒0.22139 70.2
0.21284+2.35524⇒0.1952 50.3
0.21284+1.90007⇒0.1914 63.8
0.21284+1.58910⇒0.18774 88
YZ Plane, Φ=90◦
          SHG, o+e ⇒ o
1.908⇒0.954 46.2
1.5⇒0.75 14.7
1.0796⇒0.5398 19.2
1.0642⇒0.5321 19.9/20.5/20.6/21.0
          SFG, o+e⇒ o
1.0641+0.53205⇒0.3547 42/42.7
1.0642+0.5321⇒0.35473 42.2/42.5/43.2
XZ Plane, Φ=0◦, θ<VZ
          SHG, e+o ⇒ e
1.3414⇒0.6707 3.6/4.2/5.0
1.3188⇒0.6594 5.2
1.3⇒0.65 5.4
XZ Plane, Φ=0◦, θ>VZ
          SHG, e+e ⇒ o
1.3414⇒0.6707 86.1/86.3/86.6
1.3188⇒0.6594 86
1.3⇒0.65 86.1
1.24⇒0.62 86


Phase Matching Angle Experimental Value (T=293K)

Experimental Values ​​of Non-critical Phase Matching (NCPM) Temperature

Interaction Wavelength[μm] T[℃]
Along the X-Axis       SHG, typeⅠ
1.547⇒0.7735 117
1.46⇒0.73 50
1.252⇒0.626 3.5
1.25⇒0.625 -2.9
1.215⇒0.6075 21
1.211⇒0.6055 20
1.206⇒0.603 24
1.2⇒0.6 24.3
1.15⇒0.575 61.1
1.135⇒0.5675 77.4
1.11⇒0.555 108.2
1.0796⇒0.5398 112
1.0642⇒0.5321 148/148.5/149/149.5/151
1.047⇒0.523 166.5/167/172/175/176.5/180
1.025⇒0.5125 190.3
          SFG, typeⅠ
1.908+1.0642⇒0.6832 81
1.444+1.08⇒0.6179 23
1.135+1.0642⇒0.5491 112
1.547+0.7735⇒0.5157 141
          DFG, typeⅠ
0.532-0.8⇒1.588 135
Along the Z Axis         SHG, type II
1.342⇒0.671 35
1.3⇒0.65 46


Spectrum


TaorLab laser crystals