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BETA BARIUM BORATE – BBO CRYSTALS

Beta Barium Borate - BBO is a nonlinear optical crystal with combination of a number of unique features: wide transparency region, broad phase-matching range, large nonlinear coefficient, high damage threshold.

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ESTIMATED DELIVERY TIME: 5 - 6 DAYS

SPECIFICATIONS
STANDARD SPECIFICATIONS

Flatness:                         

Parallelism:

 

Perpendicularity:

 

Angle tolerance:

 

Aperture tolerance:

 

Surface quality:

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Clear aperture:             

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λ/8 @ 633 nm

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< 20 arcsec

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< 5 arcmin

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< 30 arcmin

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± 0.1 mm

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10/5 scratch & dig per MIL-O-13830A

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90% of full aperture

PHYSICAL AND OPTICAL PROPERTIES

Chemical formula

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Crystal structure

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Optical symmetry

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Space group

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Density

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Mohs hardness

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Optical homogeneity

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Transparency region at “0” transmittance level

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Linear absorption coefficient at 1064 nm

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Refractive indices

at 1064 nm

at 532 nm

at 355 nm

at 266 nm

at 213 nm

n(o)

1.6551

1.6750

1.7055

1.7571

1.8465

n(e)

1.5426

1.5555

1.5775

1.6139

1.6742

BaB2O4

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trigonal, 3m

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Negative Uniaxial (no>ne)

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R3c

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3.85 g/cm^3

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5

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∂n = 10^(-6) cm^(-1)

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189 – 3500 nm

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< 0.1% cm^(-1)

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Sellmeier equations (λ, μm)

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Phase matching range Type 1 SHG 

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Phase matching range Type 2 SHG

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Walk-off angle

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Angular acceptance

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Thermal acceptance

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Nonlinearity coefficients

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Effective nonlinearity expressions

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Thermal expansion coefficient

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Damage threshold for TEM00 1064 nm

no2 = 2.7366122 + 0.0185720 / (λ2 – 0.0178746)
– 0.0143756 λ2
ne2 = 2.3698703 + 0.0128445 / (λ2 – 0.0153064)
– 0.0029129 λ2

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410 – 3300 nm

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530 – 3300 nm

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55.9 mrad (Type 1 SHG 1064 nm)

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1.2 mrad × cm (Type 1 SHG 1064 nm)

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70 K × cm (Type 1 SHG 1064 nm)

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d22 = ± 2.2 pm/V
d15 = d31 = ± 0.08 pm/V

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dooe = d31 sinθ – d22 cosθ sin3φ
deoe = doee = d22 cos2θ cos3φ

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α11 = 4 × 10-6K-1
α33 = 36 × 10-6K-1

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> 0.5 GW/cm2 at 10 ns
~ 50 GW/cm2 at 1 ps

DESCRIPTION

Beta Barium Borate (BBO) is a nonlinear optical crystal with a combination of unique features:

  • Wide transparency region

  • Broad phase-matching range

  • Large nonlinear coefficient

  • High damage threshold

  • Wide thermal acceptance bandwidth

  • High optical homogeneity

As a result of its excellent properties BBO crystal has a number of advantages for different applications, like NOPA with fsec pulses, harmonics generation (up to fifth) of Nd:YAG and Nd:YLF lasers, frequency doubling or tripling of femtosecond Ti:Sapphire and dye lasers, OPO at Type 1 and Type 2 phase-matching, E/O switching for Pockels cells and many other.

we offer:

  • BBO crystals with aperture up to 25×25 mm, length up to 25 mm

  • Thin BBO crystals down to 5 µm thick

  • AR, BBAR, P-coatings

  • BBO with gold electrodes for electro-optical (e/o) applications

  • Different mounting and repolishing services

Most of our standard crystals come mounted into open ring holders. Please note the letter "H" in the product code which indicates that crystal is supplied mounted.

Publication on refractive indices of BBO crystal:

https://www.osapublishing.org/ome/fulltext.cfm?uri=ome-8-6-1410&id=386031

Applications:

  • SHG@800 nm, Type 1

  • THG@800 nm, Type 1

  • SHG@1030 nm, Type 1

  • 4HG@1064 nm, Type 1

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