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Newlight's BiBO features

WB01158_1.GIF (255 bytes) Broad transparent range from 286nm to 2500nm 

WB01158_1.GIF (255 bytes) High optical homogeneity (δn ~ 10-6/cm), free of inclusions

WB01158_1.GIF (255 bytes) Large effective SHG coefficient (~ 9 times that of KDP)

WB01158_1.GIF (255 bytes) High damage threshold

WB01158_1.GIF (255 bytes) Large temperature-bandwidth

WB01158_1.GIF (255 bytes) Inertness to moisture 

Structural and Physical Properties

Crystal Structure    

Monoclinic, Point group 2    

Lattice Parameters

a=7.116 Å, b=4.993 Å, c=6.508 Å, β=105.6°, Z =2

Melting Point

726 °C    

Mohs Hardness

5 - 5.5

Specific Heat

0.5 J/gm-K at 330 K

Thermal Expansion

4.8x10-5[X], 4.4x10-6[Y], -2.69x10-5[Z]

Density

5.033 g/cm3

Optical Properties

Transmission Range 286- 2500 nm
NLO Coefficients d11=2.53pm/V, d12=2.93pm/V, d13=-1.93pm/V, d14=1.63pm/V, d25=1.67pm/V, d26=3.48 pm/V
d35=-1.58pm/V, d36=1.67pm/V
(defined in the principal optical axes xyz: nz>ny>nx, x-1, y-2, z-3)
Refractive Indices @539.75 nm: nx = 1.7874, ny = 1.8190, nz = 1.9620
@1079.5 nm: nx = 1.7569, ny = 1.7835, nz = 1.9166
Sellmeier Equations
 (λ in µm)

nx2=3.0740+0.0323/(λ2-0.0316)-0.01337λ2
ny2=3.1685+0.0373/(λ2-0.0346)-0.01750λ2
nz2=3.6545+0.0511/(λ2-0.0371)-0.0226λ2

Application examples

WB01158_1.GIF (255 bytes) SHG and THG for middle and high power Nd: lasers at 1064nm
WB01158_1.GIF (255 bytes) SHG and THG for high power Nd: lasers at 1342 &1319nm for red and blue laser
WB01158_1.GIF (255 bytes) SHG for the Nd: Lasers at 914nm & 946nm for blue laser. Over 2.8W CW blue
  @473nm was obtained from frequency doubling of 4.6W CW Nd:YAG
  @ 946nm with BiBO
WB01158_1.GIF (255 bytes) Optical Parametric Amplifiers (OPA) and Oscillators (OPO)

Comparison of Nonlinear Optical Properties of Crystals for SHG @ 946nm

Crystals

Length
(mm)

Deff
(pm/V)

Walk-off
(mrad)

Output Power(W)

Conversion  Efficiency

BiBO

10.4

3.3

40.7

2.8

63%

LBO

10

0.81

11.3

1.52

33%

BBO

8

2.0

60.3

2.1

47%

 

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