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:

Clear aperture:             

λ/8 @ 633 nm

< 20 arcsec

< 5 arcmin

< 30 arcmin

± 0.1 mm

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

90% of full aperture

PHYSICAL AND OPTICAL PROPERTIES

Chemical formula

Crystal structure

Optical symmetry

Space group

Density

Mohs hardness

Optical homogeneity

Transparency region at “0” transmittance level

Linear absorption coefficient at 1064 nm

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

trigonal, 3m

Negative Uniaxial (no>ne)

R3c

3.85 g/cm^3

5

∂n = 10^(-6) cm^(-1)

189 – 3500 nm

< 0.1% cm^(-1)

   

Sellmeier equations (λ, μm)

Phase matching range Type 1 SHG 

Phase matching range Type 2 SHG

Walk-off angle

Angular acceptance

Thermal acceptance

Nonlinearity coefficients

 

Effective nonlinearity expressions

Thermal expansion coefficient

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

410 – 3300 nm

530 – 3300 nm

55.9 mrad (Type 1 SHG 1064 nm)

1.2 mrad × cm (Type 1 SHG 1064 nm)

70 K × cm (Type 1 SHG 1064 nm)

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

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

α11 = 4 × 10-6K-1
α33 = 36 × 10-6K-1

> 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