Beta-Barium Borate-manufacture,factory,supplier from China

Beta-BBO crystal is an important nonlinear optical crystal with combination of unique optical properties, such as broad transmission and phase matching ranges, large nonlinear coefficient, high damage threshold and excellent optical homogeneity. The β-BBO crystal is an efficient material for the second, third and fourth harmonic generation of Nd:YAG lasers, and the best NLO material for the fifth harmonic generation at 213 nm.

BBO（Beta-Barium Borate, β-BaB2O4）based Pockels cells operate from approximately 0.2 - 1.65 µm and are not subject to tracking degradation. BBO exhibits low piezoelectric response, good thermal stability, and low absorption. Due to the low piezoelectric coupling coefficients of BBO, BBO Pockels cells function at repetition rates of hundreds of kilohertz.

Barium Borate exists in three major crystalline forms: alpha, beta, and gamma. The low-temperature beta phase converts into the alpha phase upon heating to 925 °C. β-BBO differs from α-BBO by the positions of the barium ions within the crystal. Both phases are birefringent, however α-BBO has centric symmetry and thus does not has the same nonlinear properties as β-BBO.α-BBO is a negative uniaxial crystal with a large birefringence over the broad transparent range from 189 nm to 3500 nm.

BBO（Beta-Barium Borate, β-BaB2O4）based Pockels cells operate from approximately 0.2 - 1.65 µm and are not subject to tracking degradation. BBO exhibits low piezoelectric response, good thermal stability, and low absorption. Low piezoelectric ringing makes this Pockels cell attractive for the control of high-power and high-pulse repetition rate (hundreds of kilohertz, up to 1MHz) lasers.

High temperature phase of α-BBO Crystal (BaB2O4) is one of the excellent birefringent crystals. It is characterized by large birefringent coefficient and wide transmission window ranged from 189nm to 3500nm. Due to its high chemical stability and medium hardness, α-BBO is fabricated easily into many kinds of optical components.The physical, chemical, thermal and optical properties of α-BBO are similar to those of β-BBO.

Beta-Barium Borate (β-BBO) is an excellent nonlinear crystal with combination of a number of unique features: wide transparency region, broad phase-matching range, large nonlinear coefficient, high damage threshold, and excellent optical homogeneity. Therefore, β-BBO provides an attractive solution for various nonlinear optical applications such as OPA, OPCPA, OPO etc.β-BBO also has advantages of large thermal acceptance bandwidth, high damage threshold and small absorption, thus is very suitable for frequency conversion of high peak or average power laser radiation, e.g.

Beta-Barium Borate (β-BBO) is an excellent nonlinear crystal with combination of a number of unique features: wide transparency region, broad phase-matching range, large nonlinear coefficient, high damage threshold, and excellent optical homogeneity. Therefore, β-BBO provides an attractive solution for various nonlinear optical applications such as OPA, OPCPA, OPO etc. β-BBO also has advantages of large thermal acceptance bandwidth, high damage threshold and small absorption, thus is very suitable for frequency conversion of high peak or average power laser radiation, e.g.

LBO (LiB3O5) is an excellent non-linear crystal of Borate-family following BBO. LBO has advantages of good ultraviolet transmittance (210-2300 nm), high laser damage threshold and large effective frequency doubling coefficient (about 3 times of KDP crystal). Therefore LBO is commonly used to produce high power second and third harmonic laser light, especially for ultraviolet lasers.LBO has large band gap and transparency region, high non-linear coupling, good chemical and mechanical properties.

High temperature phase BBO (alpha-BBO, a-BBO) is a negative uniaxial crystal with a large birefringence over the broad transparent range from 189 nm to 3500 nm. The physical, chemical, thermal, and optical properties of alpha-BBO crystal are similar to those of the low temperature phase beta-BBO crystal. However, there is no second order nonlinear effect in alpha-BBO crystal due to the centrosymmetry in its crystal structure and thus it has no use for second order nonlinear optical processes.

KTP (KTiOPO4 ) is one of the most commonly used nonlinear optical materials which offers a range of unique features: high optical quality, broad transparency range, wide acceptance angle, small walk-off angle, and type I and II non-critical phase-matching (NCPM) in a wide wavelength range.

WISOPTIC offers both plate and cube PBS for a variety of wavelength ranges and power handling requirements.

Polarizing Beamsplitters (PBS) splits incident unpolarized light into two perpendicular linearly polarized light. Among them, p-polarized light passes through completely, while s-polarized light is reflected at 45 deg which makes the emitting direction of s-light vertical to p-light. Additionally, beamsplitters can be used in reverse to combine two different beams into a single one. Beamsplitters are often classified according to their construction:cube or plate.Cube PBS are fabricated using two typically right angle prisms.

Potassium dihydrogen phosphate KH2PO4 (KDP) is a transparent dielectric material best known for its nonlinear optical and electro-optical properties. Because of its nonlinear optical properties, it has been incorporated into various laser systems for harmonic generation and optoelectrical switching.

KTA (Potassium Titanyle Arsenate, KTiOAsO4 ) is a nonlinear optical crystal similar to KTP in which atom P is replaced by As. It has good non-linear optical and electro-optical properties, e.g.

Corner cube prisms are optics which act as corner reflectors. The basic operation principle is that there are internal reflections on three mutually orthogonal prism surfaces, producing a direction of a reflected beam which is nominally parallel to the direction of the incident beam – with the accuracy limited only by the accuracy of the surface orientation of the prism. Precision prisms can offer excellent parallelism of incoming and reflecting beams. It is usually specified as an angular deviation, e.g.

Items Specifications Material CTH:YAG (Cr, Tm, Ho - doped YAG)Doping ExtentCr: 0.3~1.2 at%; Tm: 5~6 at%; Ho: 0.3~0.4 at% Crystalline Direction[111] (± 5°)DimensionsDia 3~6 (+0/-0.05) mm × 50~120 (±0.5) mm (customized)Extinction Ratio> 25 dBSingle Pass WFD < λ/8 @633 nm over central areaSurface Quality 10-5 [s-d] per MIL-O-13830BClear Aperture> 90% over central areaEnd-surface Parallelism< 20"Perpendicularity< 5'End-surface Flatness< λ/8 @633 nmChamfer0.2 ± 0.05 mm × 45°Laser CoatingAR/AR @ 209

Cr:YAG  or Cr4+:YAG (Chromium doped Ytterium Aluminum Garnet, Cr:Y3Al5O12)  is an excellent  and widely used electro-optic material for passive Q-switching diode pumped or lamp-pumped Nd:YAG, Nd:YLF, Nd:YVO4 and other Nd or Yb doped lasers at wavelength 800~1200 nm. With advantages of chemical stability, durable, UV resistant, good thermal conductivity and high damage threshold (＞500 MW/cm2 ) and being easy to be operated, Cr:YAG is popularly used to substitute for many traditional materials such as LiF, organic dyes and color centers.

Cr:YAG (Chromium doped Ytterium Aluminum Garnet, Cr:Y3Al5O12)  crystal is an excellent material for passive Q-switching of Nd:YAG and  other Nd or Yb doped lasers in the wavelength range of 0.8 to 1.2 μm. One of the remarkable features of Cr:YAG is its high damage threshold (500-1000 MW/cm2). Its absorption band extends from 800 nm to 1200 nm and peaks at around 1060nm with a very large absorption cross section.

KTP Crystal Features• Large Nonlinear Optical (NLO) Coefficients• Wide Phase-matching Acceptance Angle• Broad Temperature and Spectral Bandwidth• High Electro-Optic (E-O) Coefficients • Nonhygroscopic, Good Chemical and Mechanical Properties • Relatively High Damage Threshold for E-O modulatorKTP Crystal Applications1. SHG of Nd:Laser - KTP is the most commonly used material for frequency doubling of Nd:YAG and other Nd-doped lasers, particularly when the power density is at a low or medium level.

Cr: YAG is an excellent crystal for passive Q-switching diode pumped or lamp-pumped Nd:YAG, Nd:YLF, Nd:YVO4 and other Nd or Yb doped lasers at wavelength from 800 nm to 1200 nm. With advantages of chemical stability, durable, UV resistant, good thermal conductivity and high damage threshold (＞500 MW/cm2 ) and being easy to be operated, Cr:YAG is used widely to substitute for many traditional materials such as LiF, organic Dye and color centers.

Main SpecificationsDimensionsAperture2×2 ~ 14×14 mm2Length0.1 - 12 mmOrientation[100] or [111] (±1°)Doping Concentration0.5 ~ 3.0 mol%Initial Absorption Coefficient0.5 ~ 6.0 cm-1 @ 1064 nmInitial Transmission5% ~ 95% Surface Flatness< λ/8 @ 633 nmEnd Surface Parallelism< 30”Chamfer≤ 0.1 mm × 45°Surface Quality20-10 [s-d] (MIL-PRF-13830B)CoatingAR (R<0.2% @1064nm) or according to customer’s requestLIDT≥ 500 MW/cm2The pulse width of Cr4+:YAG passively Q-switched lasers could be as short as 5 ns for diode pumped Nd:YAG lasers and the repetition could be as high a

Polarizer is a kind of optical filter where the light transmission depends strongly on the polarization state. Normally, light with linear polarization in a certain direction is passed, and light polarized in an orthogonal direction is either absorbed or propagated to a different direction.For other directions of linear polarization with an angle θ against the“passing”direction, the transmission exhibits a cos2 θ dependence. That can be understood by considering that linear polarization state as a linear superposition of the "passing”and the“blocked”state.Most polarizers act

Polarization optics is important for both intra and extra cavity use. By using high contrast thin film polarizers in their design, laser engineers can save weight and volume within the laser system without influencing the output. Compared with polarizing prisms, polarizers have larger incident angle and can be made with larger apertures. Compared with polarizers made from birefringent crystals, the advantage of thin film polarizers made from UVFS or N-BK7 is that they can be fabricated in very large sizes, therefore are particularly well suited for high laser powers and UV wavelengths.

BBO features good optical transparency from around 200nm to over 2µm, offers a high resistance to optical damage with power handling >3GW/cm2 for 1ns pulses at 1064nm. It is possible to use BBO Pockels cells at average power levels of hundreds of watts and power densities of several kW/cm2. In addition, BBO Q-switches have very low levels of piezo-electric resonances.