LBO Crystals

  • LBO Crystal
  • LBO Material

LBO crsytal (Lithium Tri-borate) is one of the most useful nonlinear optical material not just for its relatively large conversion coefficient – 3x that of KDP, but also for its excellent physical propertie

LBO Crystals

LBO crsytal?Details:

LBO crsytal (Lithium Tri-borate) ?is one of the most useful nonlinear optical material not just for its relatively large conversion coefficient – 3x that of KDP, but also for its excellent physical properties.
LBO crystal has broad optical transparency range from 160 to 2600nm. It excels in high power SHG with minimal thermal lensing as compared to KTP. Its large acceptance angle paired with small walk-off angle which reduces the beam quality requirement for source
LBO Crsytal?also allows temperature controllable type I non-critical phase-matching(NCPM) for 1000 – 1300nm and type II NCPM for 800 to 1100nm at room temperature. With a high optical homogeneity (?n ~10-6), the material is grown virtually inclusion free. With a damage threshold of up to 45 GW/cm2 at 1064nm, it is again the material of choice for high power applications.
LBO Crstyal is widely used for SHG and THG of Nd:YAG, Nd:YLF, Nd:YVO4 and ultra-fast Ti:sapphire lasers. OPOs(Optical Parametric Oscillators) and OPAs(Optical Parametric Amplifier).

LBO crsytal Physical Property

Chemical Formula

LiB3O5

Crystal StructureOrthorhombic, mm2
Cell Parametersa = 8.4473, b = 7.3788?, c = 5.1395?, Z = 2
Melting point834°C
Optical homogeneityd n ~ 10-6/cm
Mohs hardness6
Density2.47 g/cm3
Absorption coefficient< 0.1%/cm (at 1064nm and 532nm)
Specific heat1.91J/cm3xK
Hygroscopic susceptibilitylow
Thermal expansion coefficientsa, 4 x 10-6/K; c, 36 x 10-6/K
Thermal conductivity^ c, 1.2 W/m/K; //c, 1.6 W/m/K

Linear Optical Properties

Transparency range1 60-2600nm
Refractive indices:
at 1064nm
at 532nm
at 355nm
nx = 1.5656, ny = 1.5905, nz = 1.6055
ne = 1.5785, no = 1.6065, nz = 1.6212
ne = 1.5971, no = 1.6275, nz = 1.6430
Therm-optic coefficientsdno/dT = -9.3 x 10-6/°C
dne/dT = -16.6 x 10-6/°C
Sellmeier Equations (l in mm)

no2 (l) = 2.7359 – 0.01354l2+ 0.01878/(l2-0.01822)
ne2(l) = 2.3753 – 0.01516l2+ 0.01224/(l2-0.01667)

Nonlinear Optical Properties

Phase-matchable output wavelength554 – 2660nm (type I), 790 – 2150nm (type II)
NLO coefficientsd33 = 0.06; d32 = 1.2; d22 = 1.1
Walk-off Angles(@ 1064nm)0.4° (Type I SHG), 0.3° (Type II SHG)
Acceptance Angles(@1064nm) for SHG Type I9.6(mrad-cm) CPM at 25°C 248(mrad-cm) NCPM at 150°C
Electro-optic coefficientsg 11 = 2.7 pm/V, g 22, g31 < 0.1g11
Conversion Efficiency>90% (1064 -> 532nm) Type I SHG
Damage threshold
at 1064nm
at 532nm at 355nm
45 GW/cm2 (1 ns); 10 GW/cm2 (1.3 ns)
26 GW/cm2 (1 ns); 7 GW/cm2 (250 ps) 22 GW/cm2

Lithium Tri-borate Crystal Specifications

Thin crystals: (5-10) x (5-10) x (0.01-3) mm3
Regular sizes: 2 x 2 mm2 to 30 x 30 mm2 in cross section, up to 60 mm in length
Absorption: < 20ppm (0.00002%) @1064
S/D of 0/0 for cross section: up to 5 x 5 mm
Different cuts, sizes and AR coatings are available upon request.

Nonlinear LBO crystals, LBO crystal have wide transparency region, Broad type 1 and type 2 NCPM, small walk-off angle and high damage threshold.
Lithium triborate (LiB3O5) LBO is a non-linear optics crystal.

 

LBO crystal by Cristal Laser manufacturer


LBO crystal
(Lithium Triborate – LiB3O5) has become the material of choice for high power laser applications from the UV to NIR.

Nonlinear LBO crystals, LBO crystal have wide transparency region, Broad type 1 and type 2 NCPM, small walk-off angle and high damage threshold.

Lithium Tri-borate Crystal

It is unique in many aspects, especially its wide transparency range, moderately high non-linear coupling, high damage threshold and good chemical and mechanical properties. Its transmission range is from 0.16m to 2.6m.
LBO crystals allows temperature-controllable non-critical phase-matching (NCPM) for 1.0-1.3 m, Type I SHG, and also provides room temperature NCPM for Type II SHG at 0.8-1.1 m. It possesses a relatively large angular acceptance bandwidth, reducing the beam quality requirements for source lasers.

Nonlinear LBO crystals, LBO crystal have wide transparency region, Broad type 1 and type 2 NCPM, small walk-off angle and high damage threshold.

Tag:LBO, nonlinear, high damage threshold, frequency doubling, high power lasers, crystal LBO, Crystals,nonlinear and laser crystals, crystal, lbo, second harmonic generation, lithium triborate.

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