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BBO Crystals

  • Versatile applications: SHG,THG,4HG,5HG, OPO,OPA,OPG, SPDC, EO Q-swithes
  • Maximum aperture: 20x20mm
  • Ultra-thin crystals: 0.01mm with FS substrate, 0.05mm free standing
  • Coating option: P-coating/ muliti-layer V-type AR coating/ dual wavelength AR coating
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Code Size Thickness θ φ Coating Application Unit Price Delivery Cart
20201-001 6x6mm 0.01mm 23.4° 90° P/P SHG@1030nm Type1 $380 3 weeks
20201-002 6x6mm 0.02mm 23.4° 90° P/P SHG@1030nm Type1 $380 3 weeks
20201-003 6x6mm 0.05mm 23.4° 90° P/P SHG@1030nm Type1 $380 2 weeks
20201-004 6x6mm 0.1mm 23.4° 90° P/P SHG@1030nm Type1 $380 2 weeks
20201-005 6x6mm 0.5mm 23.4° 90° P/P SHG@1030nm Type1 $245 2 weeks
20201-006 6x6mm 1.0mm 23.4° 90° P/P SHG@1030nm Type1 $245 2 weeks
20201-007 6x6mm 1.5mm 23.4° 90° P/P SHG@1030nm Type1 $245 2 weeks
20201-008 6x6mm 2.0mm 23.4° 90° P/P SHG@1030nm Type1 $245 2 weeks
20201-009 6x6mm 0.01mm 29.2° 90° P/P SHG@800nm Type1 $380 3 weeks
20201-010 6x6mm 0.02mm 29.2° 90° P/P SHG@800nm Type1 $380 3 weeks
20201-011 6x6mm 0.05mm 29.2° 90° P/P SHG@800nm Type1 $380 2 weeks
20201-012 6x6mm 0.1mm 29.2° 90° P/P SHG@800nm Type1 $305 2 weeks
20201-013 6x6mm 0.2mm 29.2° 90° P/P SHG@800nm Type1 $245 2 weeks
20201-014 6x6mm 0.5mm 29.2° 90° P/P SHG@800nm Type1 $245 2 weeks
20201-015 6x6mm 1.0mm 29.2° 90° P/P SHG@800nm Type1 $245 2 weeks
20201-016 6x6mm 2.0mm 29.2° 90° P/P SHG@800nm Type1 $245 2 weeks
20201-017 10x10mm 0.02mm 29.2° 90° P/P SHG@800nm Type1 $605 3 weeks
20201-018 10x10mm 0.05mm 29.2° 90° P/P SHG@800nm Type1 $605 2 weeks
20201-019 10x10mm 0.1mm 29.2° 90° P/P SHG@800nm Type1 $530 2 weeks
20201-020 10x10mm 0.2mm 29.2° 90° P/P SHG@800nm Type1 $455 2 weeks
20201-021 10x10mm 0.5mm 29.2° 90° P/P SHG@800nm Type1 $455 2 weeks
20201-022 10x10mm 1.0mm 29.2° 90° P/P SHG@800nm Type1 $455 2 weeks
20201-023 10x10mm 1.5mm 29.2° 90° P/P SHG@800nm Type1 $455 2 weeks
20201-024 10x10mm 2.0mm 29.2° 90° P/P SHG@800nm Type1 $455 2 weeks
20201-025 6x6mm 0.01mm 44.3° 90° P/P THG@800nm Type1 $380 3 weeks
20201-026 6x6mm 0.02mm 44.3° 90° P/P THG@800nm Type1 $380 3 weeks
20201-027 6x6mm 0.05mm 44.3° 90° P/P THG@800nm Type1 $380 2 weeks
20201-028 6x6mm 0.1mm 44.3° 90° P/P THG@800nm Type1 $305 2 weeks
20201-029 6x6mm 0.2mm 44.3° 90° P/P THG@800nm Type1 $245 2 weeks
20201-030 6x6mm 0.5mm 44.3° 90° P/P THG@800nm Type1 $245 2 weeks
20201-031 6x6mm 1.0mm 44.3° 90° P/P THG@800nm Type1 $245 2 weeks
20201-032 6x6mm 2.0mm 44.3° 90° P/P THG@800nm Type1 $245 2 weeks
20201-033 10x10mm 0.02mm 44.3° 90° P/P THG@800nm Type1 $605 3 weeks
20201-034 10x10mm 0.05mm 44.3° 90° P/P THG@800nm Type1 $605 2 weeks
20201-035 10x10mm 0.1mm 44.3° 90° P/P THG@800nm Type1 $530 2 weeks
20201-036 10x10mm 0.2mm 44.3° 90° P/P THG@800nm Type1 $455 2 weeks
20201-037 10x10mm 0.5mm 44.3° 90° P/P THG@800nm Type1 $455 2 weeks
20201-038 10x10mm 1.0mm 44.3° 90° P/P THG@800nm Type1 $455 2 weeks
20201-039 10x10mm 2.0mm 44.3° 90° P/P THG@800nm Type1 $575 2 weeks
20201-040 10x10mm 2.5mm 44.3° 90° P/P THG@800nm Type1 $575 2 weeks
20201-041 10x10mm 5.0mm 44.3° 90° P/P THG@800nm Type1 $760 2 weeks
20201-042 7x7mm 6.0mm 47.6° 90° P/P 4HG@1064nm Type1 $560 2 weeks
20201-043 6x6mm 2.0mm 21.2° 90° P/P Type1 Phase Matching $245 2 weeks
20201-044 5x5mm 0.5mm 23.4° 90° P/P Type1 Phase Matching $245.0 2 weeks
20201-045 8x8mm 2.5mm 23.4° 90° P/P Type1 Phase Matching $395 2 weeks
20201-046 10x10mm 0.1mm 28.5° 90° P/P Type1 Phase Matching $530 2 weeks
20201-047 8x8mm 0.5mm 29° 90° P/P Type1 Phase Matching $350 2 weeks
20201-048 8x8mm 2.5mm 29° 90° P/P Type1 Phase Matching $395 2 weeks
20201-049 6x6mm 1.0mm 29.2° 90° P/P Type1 Phase Matching $245 2 weeks
20201-050 8x8mm 1.0mm 29.2° 90° P/P Type1 Phase Matching $350 2 weeks
20201-051 6x6mm 2.0mm 30° 90° P/P Type1 Phase Matching $245 2 weeks
20201-052 6x6mm 0.2mm 30.5° 90° P/P Type1 Phase Matching $245 2 weeks
20201-053 6x6mm 1.0mm 30.5° 90° P/P Type1 Phase Matching $245 2 weeks
20201-054 6x6mm 2.0mm 30.5° 90° P/P Type1 Phase Matching $245 2 weeks
20201-055 3x3mm 4.0mm 31.3° 90° P/P Type1 Phase Matching $245 2 weeks
20201-056 3x3mm 6.0mm 31.3° 90° P/P Type1 Phase Matching $245 2 weeks
20201-057 6x6mm 2.0mm 31.5° 90° P/P Type1 Phase Matching $245 2 weeks
20201-058 6x6mm 2.5mm 31.5° 90° P/P Type1 Phase Matching $245 2 weeks
20201-059 8x8mm 0.6mm 32° 90° P/P Type1 Phase Matching $350 2 weeks
20201-060 8x8mm 1.0mm 32° 90° P/P Type1 Phase Matching $350 2 weeks
20201-061 6x6mm 0.6mm 32.5° 90° P/P Type1 Phase Matching $245 2 weeks
20201-062 6x6mm 1.0mm 32.5° 90° P/P Type1 Phase Matching $245 2 weeks
20201-063 8x8mm 0.8mm 32.5° 90° P/P Type1 Phase Matching $350 2 weeks
20201-064 5x5mm 2.5mm 32.6° 90° P/P Type1 Phase Matching $245 2 weeks
20201-065 5x5mm 4.0mm 32.6° 90° P/P Type1 Phase Matching $275 2 weeks
20201-066 8x8mm 1.0mm 35° 90° P/P Type1 Phase Matching $350 2 weeks
20201-067 8x8mm 2.0mm 35° 90° P/P Type1 Phase Matching $350 2 weeks
20201-068 20x20mm 0.15mm 35° 90° P/P Type1 Phase Matching $1970 2 weeks
20201-069 20x20mm 0.2mm 35° 90° P/P Type1 Phase Matching $1970 2 weeks
20201-070 10x10mm 3.0mm 40.3° 90° P/P Type1 Phase Matching $575 2 weeks
20201-071 8x8mm 0.3mm 42.8° 90° P/P Type1 Phase Matching $350 2 weeks
20201-072 6x6mm 0.2mm 43° 90° P/P Type1 Phase Matching $245 2 weeks
20201-073 8x8mm 0.1mm 43° 90° P/P Type1 Phase Matching $395.0 2 weeks
20201-074 8x8mm 0.5mm 43° 90° P/P Type1 Phase Matching $350 2 weeks
20201-075 5x5mm 1.0mm 44° 90° P/P Type1 Phase Matching $245 2 weeks
20201-076 8x8mm 0.15mm 44.3° 90° P/P Type1 Phase Matching $350 2 weeks
20201-077 8x8mm 0.5mm 44.3° 90° P/P Type1 Phase Matching $350 2 weeks
20201-078 10x10mm 0.4mm 45.9° 90° P/P Type1 Phase Matching $455 2 weeks
20201-079 3x3mm 4.0mm 47.7° 90° P/P Type1 Phase Matching $245 2 weeks
20201-080 8x8mm 1.0mm 47.7° 90° P/P Type1 Phase Matching $350 2 weeks
20201-081 8x8mm 3.0mm 47.7° 90° P/P Type1 Phase Matching $440 2 weeks
20201-082 10x10mm 1.0mm 47.7° 90° P/P Type1 Phase Matching $455 2 weeks
20201-083 10x10mm 2.5mm 47.7° 90° P/P Type1 Phase Matching $575 2 weeks
20201-084 8x8mm 0.1mm 48° 90° P/P Type1 Phase Matching $395 2 weeks
20201-085 8x8mm 0.2mm 48° 90° P/P Type1 Phase Matching $350 2 weeks
20201-086 4x4mm 2.8mm 51.2° 90° P/P Type1 Phase Matching $245 2 weeks
20201-087 5x5mm 2.5mm 28° 30° P/P Type2 Phase Matching $245 2 weeks
20201-088 8x8mm 2.5mm 28° 30° P/P Type2 Phase Matching $395 2 weeks
20201-089 5x5mm 2.0mm 28.7° 30° P/P Type2 Phase Matching $245 2 weeks
20201-090 8x8mm 0.6mm 30° 30° P/P Type2 Phase Matching $350 2 weeks
20201-091 10x10mm 1.0mm 32° 30° P/P Type2 Phase Matching $575 2 weeks
20201-092 10x10mm 5.0mm 32° 30° P/P Type2 Phase Matching $760 2 weeks

Beta-Barium borate (or β-BaB2O4, β-BBO) crystal is one of the most eminent nonlinear optical crystals. BBO crystal manifest outstanding optical features such as its high nonlinear optical coefficient, low group velocity dispersion, broad transparency range of 189-3500 nm (The transparency curve are shown in the Resource sector) and high damage threshold. The crystal has an effective frequency doubling coefficient 3-6 times larger than the current general ADP and KDP crystals in the near-infrared, visible and ultraviolet band. It also has a light damage threshold (15Gw/cm2) twice higher than that of KDP , and high optical homogeneity.

These characteristics made beta BBO crystals become a versatile material for various nonlinear optical applications such as harmonic generation operations and optical parametric oscillators(OPO) and optical parametric amplifiers(OPA) and other applications in the field of quantum optics( quantum entanglement) and EO applications. Besides, BBO crystals also excel in low thermal-optical coefficients and availability of large size high quality single crystals.

Hangzhou Shalom EO offers off-the-shelf and customized BBO crystals for nonlinear optical applications. The ultra-thin 0.01mm thickness with fused silica substrates and 0.05mm thickness free standing BBO crystals are available for femto-line lasers. We provide BBO crystals for the usages of :


  • Frequency-conversion (SHG,THG, 4HG and 5HG) of Visible and Near IR laser light (such a as Na:YAG lasers, Ti:Sapphire lasers)

They are the most effective crystal for 5HG at 213nm and superior for intracavity frequency doubling high power Nd:YAG lasers / THG and FHG Ti:Sapphire lasers / type I SHG and THG of an Alexandrite laser with high energy conversion efficiencies. the tuning curves of second harmonic generation(SHG) are shown in the Resource sector.

  •  OPO/OPG/OPA pumped by ultrafast pulses of wavelengths in the Near IR to UV

Utilizing optical parametric oscillation(OPO) and parametric optical amplification (OPA)  of BBO crystal, optcial parametric generation (OPG) one could easily generate a coherent radiation with broad tuning wavelength range (from the UV to IR）.  Shalom EO provide ultra-thin BBO crystals for femtosecond laser with high phase-velocity and group-velocity matching.The tuning angles of type I and type II BBO OPO and OPA at 532nm, 355nm and 266nm are collected and illustrated in Fig. 3 and Fig. 4 in the Resource sector.

  •  Sum-frequency mixing (SFM) into the Visible to the deep UV (dye lasers)

The BBO provided by Shalom EO have extensive usage in the Dye lasers. According to researches, 

with type I sum-frequency of 780 - 950 nm and 248.5 nm (SHG output of 495 nm dye laser) in BBO, the shortest UV outputs ranging from 188.9nm to 197 nm and the pulse energy of  95 mJ at 193 nm and 8 mJ at 189 nm have been obtained, respectively.

BBO crytsals have high prospect in the the field of quantum optics and are suitable for electro-optic modulations.


Specifications:

Dimension Tolerance(W±0.1mm)x(H±0.1mm)Clear Aperturecentral 90% or the diameter
Scattering of Crystals

No visible scattering paths or centers

when inspected by a 50mW green Laser

Flatnessless than λ/8 @ 633nm
Transmitting Wavefront Distortionless than λ/8 @ 633nmChamfer≤0.2mmx45°
Chip≤0.1mmSurface Qualitybetter than 10/5 S/D (MIL-PRF-13830B)
Parallelism≤20 arc secondsPerpendicularity≤5 arc minutes
Angle Tolerance≤0.25°Quality Warranty Periodone year under proper use

Featured Properties of BBO Crystals:

            • Broad phase matchable range from 409.6nm to 3500nm
            • Wide transmission region from 190nm to 3500nm
            • Large effective second-harmonic-generation (SHG) coefficient about 6 times greater than that of KDP crystal
            • High optical homogeneity with dn < 10-6/cm
            • Wide temperature-bandwidth of about 55℃


                    Typical Applications of BBO crystals:

                    • For its broad matchable phase range from 409.6nm to 3500nm and good transmission from 190nm to 3500nm, BBO crystals has been used in a wide variety kinds of phase-matching  applications
                    • Second, third, fourth and fifth harmonic generation of Nd doping lasers
                    • Second, third and fourth harmonic generation of Ti:Sapphire ultra-fast pulsed lasers
                    • Second harmonic generation to generate wavelengths as short as 204.8 nm
                    • Shorter wavelengths (193 nm) can be generated by sum frequency mixing
                    • Frequency doubling, tripling and mixing of Dye lasers
                    • Frequency-doubling of Argon ion, Cu-vapor and Ruby lasers
                    • Optical parametric amplifier (OPA) and optical parametric oscillators (OPO)
                    • Pockels cells for high power, high repetition rates and short wavelength applications
                    • Spontaneous down conversions (SPDC) two entangled photon in quantum entanglement applications


                    Curves:

                    1. Applications in harmonic generations

                    BBO is an efficient NLO crystal for second harmonic generation(SHG), third harmonic generation(THG), fourth harmonic generation(4HG) and fifth harmonic generation(5Hg). And BBO is the only NLO material which can be used to produce the fifth harmonic generation (5HG) of Nd:YAG lasers at 213 nm. Because of a small acceptance angle and large angular walkoff, good laser beam quality (small divergence, good mode condition, etc.) is the crucial factor for BBO to obtain high conversion efficiency. Tight focus of laser beam is not recommended by Shalom EO's engineer. The phase matching of both type I and type II  BBO can be reached by angle tuning. The transparency rate and the tuning curves of second harmonic generation(SHG) are shown in Fig.1 and Fig.2 separately below:


                                                       

                                                 Fig.1  Transparency curve of BBO                                                     Fig.2   Tuning curves of type 1 and type 2 BBO



                    2.The OPO and OPA of BBO crystal

                    The OPO and OPA of BBO are convenient means to produce a widely tunable coherent radiation from the UV to IR. The tuning angles of type I and type II BBO OPO and OPA at 532nm, 355nm and 266nm are collected and illustrated in Fig. 3 and Fig. 4, respectively.


                                                        

                     Fig.1  Type 1 BBO OPO tuning curves (@532/355/266nm)                                     Fig.2 Type 2 BBO OPO tuning curves (@532/355/266nm) 



                    Chemical and Structural Properties:

                    Crystal StructureTrigonal, space group R3cLattics Parametersa=b=12.532Å, c=12.717Å, Z=6
                    Melting PointAbout 1095℃Mohs Hardness4
                    Density3.85g/cm3Thermal Conductivity1.2W/m/K(┴c): 1.6W/m/K(//c)
                    Thermal Expansion Coefficientsa11=4x10-6/K; a33=36x10-6/K

                    Optical and Nontinear Optical Properties:

                    Transparency Range190-3500nmSHG Phase Matchable Range409.6-3500nm(Type I) 525-3500nm(Type II)
                    Therm-optic Coefficients(/°C)dno/dT=-16.6X10-6 dne/dT=-9.3X10-6Absorption Coefficients<0.1%/cm at 1064nm <1%/cm at 532nm
                    Angle Acceptance

                    0.8mrad-cm (θ, Type I,1064 SHG)

                    1.27mrad-cm (θ, Type II,1064 SHG)

                    		Temperature Acceptance55℃-cm
                    Spectral Acceptance1.1nm-cmWalk-off Angle2.7° (Type I 1064 SHG) 3.2° (Type II 1064 SHG)
                    NLO Coefficients

                    deff(I)=d31sinθ+(d11cosΦ-d22sin3Φ)cosθ

                    deff(II)=(d11sin3Φ+d22cos3Φ)cos2θ

                    		Non-vanished NLO Susceptibilitiesd11=5.8xd36(KDP) d31=0.05xd11 d22<0.05xd11
                    Sellmeier Equations(λ in μm )

                    no2=2.7359+0.01878 / (λ2-0.01822) -0.01354

                    λ2 ne2=2.3753+0.01224 / (λ2-0.01667) -0.01516 λ2

                    		Electro-optic Coefficientsr22=2.7pm/V
                    Half-wave Voltage7KV (at 1064nm,3*3*20mm3)Resistivity>1011upohm-cm
                    Relative Dielectric Constantεs11/εo:6.7 εs33/εo:8.1 Tan δ<0.001
                    BBO 10x10x0.05mm for THG@800nm Type 1

                    BBO 10x10x0.05mm for THG@800nm Type 1

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                    BBO 8x8x0.6mm for Type2 Phase Matching

                    BBO 8x8x0.6mm for Type2 Phase Matching

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                    BBO 8x8x1.0mm for Type1 Phase Matching

                    BBO 8x8x1.0mm for Type1 Phase Matching

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